Hello, I’m Kodak.
If you listen to casual Japanese, watch anime, or read social media posts, you will often hear:
だるい。
Darui.
I feel sluggish. / What a drag.
だるい (darui) originally describes a heavy, sluggish feeling that makes moving your body feel difficult. In modern casual speech, it can also describe an activity or situation as tiring, bothersome, or not worth the effort.
Because of this, the best English translation may be sluggish, heavy, drained, tired, exhausting, annoying, or “what a drag”, depending on the context.
① what だるい (darui) means
② its physical and casual slang-like meanings
③ how to pronounce and write it
④ how to conjugate it as an い-adjective
⑤ natural patterns such as 体がだるい and だるくて動けない
⑥ the differences between だるい, 疲れた, 眠い, しんどい, 面倒くさい, and かったるい
⑦ common anime, manga, and social-media forms such as だるっ, だる, and だりぃ
⑧ the history and kanji of the word
Today’s Japanese word is だるい (darui)!
Its core image is “your body or motivation feels heavy, so moving or doing something takes effort.”
That is why だるい can mean both “I feel sluggish” and the casual “That sounds like a drag.”
What Does だるい (Darui) Mean?
The basic meaning of だるい is that the body feels heavy, weak, or sluggish, making movement feel troublesome.
⇒ physically sluggish
⇒ heavy and lacking energy
⇒ drained or listless
⇒ reluctant to move because the body feels tired
⇒ casually: bothersome / exhausting / “what a drag”
今日は体がだるい。
Kyō wa karada ga darui.
My body feels sluggish today.
熱があって、全身がだるい。
Netsu ga atte, zenshin ga darui.
I have a fever, and my whole body feels heavy.
明日の会議、だるいな。
Ashita no kaigi, darui na.
Tomorrow’s meeting sounds like such a drag.
The Two Main Meanings of だるい
1. Physical Meaning: “My Body Feels Sluggish”
This is the dictionary’s central modern meaning. Fatigue, insufficient sleep, illness, heat, or physical strain may make the body feel heavy and difficult to move.
The body has little strength and movement feels like extra work.
朝から体がだるい。
Asa kara karada ga darui.
My body has felt sluggish since this morning.
昨日運動しすぎて、足がだるい。
Kinō undō shisugite, ashi ga darui.
My legs feel heavy because I exercised too much yesterday.
なんとなくだるくて、何もする気にならない。
Nantonaku darukute, nani mo suru ki ni naranai.
I feel vaguely sluggish and do not feel like doing anything.
2. Casual Meaning: “That Is Such a Drag”
In casual speech, the physical sense of heaviness extends to activities and situations. If something feels tiring, troublesome, repetitive, or not worth the effort, a speaker may call it だるい.
Just thinking about doing it makes your body or motivation feel heavy.
宿題多すぎ。だるい。
Shukudai ōsugi. Darui.
There is way too much homework. What a pain.
雨の中、駅まで歩くのだるいな。
Ame no naka, eki made aruku no darui na.
Walking all the way to the station in the rain is such a drag.
その説明、毎回するのだるくない？
Sono setsumei, maikai suru no darukunai?
Isn’t it exhausting to explain that every time?
Pronunciation and Writing of だるい
Kanji spelling: 怠い
Alternative rare spelling: 懈い
Katakana: ダルイ
Romaji: darui
Mora: だ・る・い (3 morae)
Pronounce the three morae separately:
だ (da) + る (ru) + い (i)
Do not turn the final two vowels into an English-style “ray” or “rye” sound.
Although the kanji spelling 怠い exists, modern Japanese normally writes the word in hiragana as だるい. The kanji may look formal or unfamiliar even to native readers.
Katakana ダルイ may be used for visual emphasis in manga, advertising, or online posts.
だるい Is an い-Adjective
だるい is an い-adjective. It conjugates by changing the final い.
だるくない — not sluggish / not bothersome
だるかった — felt sluggish / was a drag
だるくなかった — did not feel sluggish
だるくて — sluggish, and… / because one feels sluggish…
だるければ — if one feels sluggish
だるすぎる — too exhausting / extremely sluggish
だるそう — looks sluggish or unenthusiastic
Present: だるい
今日はだるい。
Kyō wa darui.
I feel sluggish today.
Negative: だるくない
今日は昨日ほどだるくない。
Kyō wa kinō hodo darukunai.
I do not feel as sluggish as I did yesterday.
Past: だるかった
朝はすごくだるかった。
Asa wa sugoku darukatta.
I felt really sluggish this morning.
Polite: だるいです
今日は少し体がだるいです。
Kyō wa sukoshi karada ga darui desu.
My body feels a little sluggish today.
The polite form is だるいです, not だるです or だるくです.
How to Use だるい Naturally
1. 体がだるい: “My Body Feels Sluggish”
This is the clearest and most neutral physical use.
今日は体がだるい。
Kyō wa karada ga darui.
My body feels sluggish today.
寝不足で体がだるい。
Nebusoku de karada ga darui.
My body feels heavy because I did not get enough sleep.
2. Body Part + がだるい
You can specify the body part that feels heavy or tired.
長時間立っていたから、足がだるい。
Chōjikan tatte ita kara, ashi ga darui.
My legs feel heavy because I was standing for a long time.
パソコンを使いすぎて、腕がだるい。
Pasokon o tsukaisugite, ude ga darui.
My arms feel tired and heavy from using the computer too much.
3. なんかだるい: “I Feel Kind of Off and Sluggish”
なんか makes the statement vague and conversational.
今日はなんかだるい。
Kyō wa nanka darui.
I feel kind of sluggish today.
This is common when the speaker cannot clearly identify the reason.
4. だるくて～: “I Feel So Sluggish That…”
体がだるくて起きられない。
Karada ga darukute okirarenai.
My body feels so heavy that I cannot get up.
だるくて何もする気がしない。
Darukute nani mo suru ki ga shinai.
I feel too sluggish to do anything.
5. だるくなる: “To Start Feeling Sluggish”
Change the final い to く and add なる.
↓ い → く
だるくなる
⇒ become sluggish / start feeling heavy
暑い日は午後になるとだるくなる。
Atsui hi wa gogo ni naru to daruku naru.
On hot days, I start feeling sluggish in the afternoon.
6. Verb + のがだるい: “Doing It Is a Drag”
This is common in casual conversation.
⇒ Doing something feels tiring or bothersome.
毎朝早く起きるのがだるい。
Maiasa hayaku okiru no ga darui.
Getting up early every morning is such a drag.
一から説明するのがだるい。
Ichi kara setsumei suru no ga darui.
It is exhausting to explain everything from the beginning.
7. Noun + だるい: Casual Evaluation
In very casual speech, a situation or event may be followed directly by だるい.
明日テストだ。だるい。
Ashita tesuto da. Darui.
There is a test tomorrow. What a drag.
月曜日、だるいな。
Getsuyōbi, darui na.
Mondays are such a drag.
This use expresses the speaker’s attitude and can sound immature or dismissive in formal settings.
Useful Expressions with だるい
My body feels sluggish.全身がだるい
My whole body feels heavy.
足がだるい
My legs feel heavy or tired.
なんかだるい
I feel kind of sluggish.
だるくて動けない
I feel too sluggish to move.
だるくなってきた
I am starting to feel sluggish.
だるすぎる
This is way too exhausting / I feel incredibly sluggish.
だるそう
looks sluggish, tired, or unenthusiastic
だるさが残る
the sluggishness remains
だるさを感じる
to feel heaviness or sluggishness
だるい vs 疲れた: Sluggish vs Tired
だるい and 疲れた often occur together, but they focus on different aspects.
Your physical or mental energy has been consumed.
⇒ tired / exhaustedだるい (darui)
Your body or mood feels heavy, and moving or acting feels difficult.
⇒ sluggish / drained / listless
Compare the difference in context
一日中働いて疲れた。
I’m tired after working all day.
⇒ Your energy has been used up.
朝から体がだるい。
My body has felt sluggish since this morning.
⇒ Your body feels heavy and difficult to move.
疲れたし、体もだるい。
I’m tired, and my body feels sluggish too.
⇒ Both conditions can exist together.
For a full explanation, see What Does 疲れた (Tsukareta) Mean?
だるい vs 眠い: Sluggish vs Sleepy
Your body wants sleep.
⇒ sleepy / drowsyだるい (darui)
Your body feels heavy and you do not feel like moving.
⇒ sluggish / listless
眠くはないけど、体がだるい。
Nemuku wa nai kedo, karada ga darui.
I’m not sleepy, but my body feels sluggish.
寝不足で眠いし、体もだるい。
Nebusoku de nemui shi, karada mo darui.
I’m sleepy from lack of sleep, and my body feels heavy too.
For more detail, see What Does 眠い (Nemui) Mean?
だるい vs しんどい: Heavy vs Hard or Painful
しんどい has a wider range. It can describe physical exhaustion, emotional hardship, a difficult task, or a painful situation.
The body or motivation feels heavy.
⇒ sluggish / listless / what a dragしんどい
Something is physically or emotionally hard to endure.
⇒ exhausting / tough / painful / hard
熱はないけど、体がだるい。
I do not have a fever, but my body feels sluggish.
この坂を走るのはしんどい。
Running up this hill is exhausting.
最近、人間関係がしんどい。
Relationships have been emotionally difficult lately.
だるい vs 面倒くさい: A Drag vs Troublesome
Your motivation feels heavy; you do not want to make the effort.面倒くさい
The task itself involves too much trouble, effort, or complication.
駅まで歩くの、だるい。
Walking to the station feels like a drag.
⇒ Focus on the speaker’s lack of energy or motivation.
この手続きは面倒くさい。
This procedure is troublesome.
⇒ Focus on the complicated or bothersome process.
In casual conversation, both may translate as “What a pain,” but the mental image is different.
だるい vs かったるい: Neutral vs More Casual and Blunt
かったるい also describes physical heaviness and low motivation. It is historically connected to an older expression referring to tired arms and later developed the broader sense “sluggish” or “a drag.”
Common and widely usable in everyday conversation.かったるい
More colloquial and sometimes rougher; can mean physically sluggish, unmotivated, or not worth the effort.
今日は体がだるい。
My body feels sluggish today.
こんな単純作業、かったるい。
This kind of repetitive work is such a drag.
If you are unsure, だるい is the safer word to learn first.
だるい vs 気だるい: Sluggish vs Languid
気だるい (kedarui) means vaguely languid, listless, or languorous. It often sounds more descriptive, atmospheric, or literary than everyday だるい.
Direct everyday heaviness or low energy.気だるい
A vague languid mood or atmosphere.
午後になると体がだるい。
My body feels sluggish in the afternoon.
気だるい午後の空気。
The languid atmosphere of the afternoon.
Does だるい Mean “Lazy”?
Usually, no.
describes a feeling or condition
⇒ sluggish / heavy / lacking energy怠けている
describes not doing what one should do
⇒ being lazy / slacking off
怠け者
a lazy person
体がだるくて休んでいる。
Karada ga darukute yasunde iru.
I am resting because my body feels sluggish.
彼は仕事を怠けている。
Kare wa shigoto o namakete iru.
He is slacking off at work.
Do not assume that someone who says だるい is admitting to being lazy.
Casual, Slang, Anime, and Social-Media Forms
In casual speech, younger speakers and fictional characters may shorten or roughen だるい.
I feel sluggish. / What a drag.だるっ。
Ugh, what a pain. / So exhausting.
だる。
What a drag. / Annoying.
マジでだるい。
This is seriously exhausting / annoying.
だるすぎる。
This is way too much effort / I feel way too sluggish.
だりぃ。
A rough contraction of だるい: “What a freaking drag.”
今日だるすぎ。
I feel ridiculously sluggish today.
Anime-Style Examples
Going to school is such a drag.朝から訓練とか、だりぃ。
Training first thing in the morning? What a pain.
今日はもう動きたくない。だるすぎる。
I do not want to move anymore today. I feel way too sluggish.
その話、長くない？ だるっ。
Isn’t that story too long? Ugh, what a drag.
なんか体だるいんだけど。
My body feels kind of off and sluggish.
Anime dialogue may exaggerate personality. Forms such as だりぃ and dismissively calling another person’s request だるい can sound disrespectful in real life.
Natural Example Sentences with だるい
今日は朝から体がだるい。
Kyō wa asa kara karada ga darui.
My body has felt sluggish since this morning.
寝すぎたせいか、逆にだるい。
Nesugita sei ka, gyaku ni darui.
Maybe because I slept too much, I actually feel sluggish.
昨日歩きすぎて足がだるい。
Kinō arukisugite ashi ga darui.
My legs feel heavy because I walked too much yesterday.
暑くて体がだるくなってきた。
Atsukute karada ga daruku natte kita.
The heat is starting to make my body feel sluggish.
今日はだるくて、料理する気にならない。
Kyō wa darukute, ryōri suru ki ni naranai.
I feel too sluggish to cook today.
毎日同じ入力作業をするのはだるい。
Mainichi onaji nyūryoku sagyō o suru no wa darui.
Doing the same data-entry work every day is exhausting.
雨の日に外へ出るの、だるくない？
Ame no hi ni soto e deru no, darukunai?
Isn’t going out on a rainy day a drag?
彼はソファでだるそうに寝転んでいた。
Kare wa sofa de darusō ni nekoronde ita.
He was lying on the sofa looking sluggish.
薬を飲んだら、だるさが少し軽くなった。
Kusuri o nondara, darusa ga sukoshi karuku natta.
After taking the medicine, the sluggish feeling became a little lighter.
説明するのがだるいから、リンクを送るね。
Setsumei suru no ga darui kara, rinku o okuru ne.
Explaining it is a hassle, so I’ll send you the link.
Example Dialogues Using だるい
Situation 1: Physical sluggishness
A: 大丈夫？ 顔色悪いよ。
Daijōbu? Kaoiro warui yo.
Are you okay? You look pale.
B: うん。熱はないけど、朝から体がだるい。
Un. Netsu wa nai kedo, asa kara karada ga darui.
Yeah. I do not have a fever, but my body has felt sluggish since this morning.
⇒ 体がだるい describes a physical condition.
Situation 2: A bothersome task
A: この書類、全部手書きだって。
Kono shorui, zenbu tegaki datte.
Apparently we have to fill out all these forms by hand.
B: えー、だるい。オンラインにしてほしい。
Ē, darui. Onrain ni shite hoshii.
Ugh, what a pain. I wish they would put it online.
⇒ The task makes the speaker’s motivation feel heavy.
Situation 3: Distinguishing 眠い and だるい
A: 眠いの？
Nemui no?
Are you sleepy?
B: 眠くはない。なんか体がだるいだけ。
Nemuku wa nai. Nanka karada ga darui dake.
I’m not sleepy. My body just feels kind of sluggish.
⇒ 眠い is the urge to sleep; だるい is bodily heaviness.
Situation 4: A rough anime-style speaker
A: 今から作戦会議だ。
Ima kara sakusen kaigi da.
We are having a strategy meeting now.
B: またかよ。だりぃな。
Mata ka yo. Darī na.
Again? What a freaking drag.
⇒ だりぃ is rough and highly informal.
Common Mistakes with だるい
Mistake 1: Translating It Only as “Tired”
だるい may involve tiredness, but the more precise image is heaviness, sluggishness, and reluctance to move.
I have used up my energy.だるい
My body or motivation feels heavy.
Mistake 2: Assuming It Always Describes Illness
体がだるい may describe a physical symptom, but だるい is also used casually for ordinary low energy and bothersome tasks.
風邪で体がだるい。
My body feels sluggish because of a cold.Casual attitude:
宿題するのだるい。
Doing homework is such a drag.
Mistake 3: Using だるい to Mean “A Lazy Person”
This does not naturally mean “He is a lazy person.”○ 彼は怠け者だ。
He is a lazy person.
○ 彼は仕事を怠けている。
He is slacking off at work.
Depending on context, 彼はだるい could instead sound like “He is annoying/exhausting to deal with,” so be careful.
Mistake 4: Writing だるくです
× だるくです。
○ だるいです。
I feel sluggish.
○ だるくなりました。
I started feeling sluggish.
Mistake 5: Using Rough Forms in Polite Situations
だるっ and だりぃ can sound dismissive or rude. In professional settings, describe your condition or concern more clearly.
今日マジだるい。More appropriate when reporting your condition:
今日は少し体調が悪く、体がだるいです。
I am feeling a little unwell today, and my body feels sluggish.
The Origin and History of だるい
Japanese dictionaries list だるい with the older literary form だるし and also note the variant たるい. Historical uses were broader than the word’s most common modern meaning.
Historical range of meanings
① physically tired, heavy, or reluctant to move
② loose or lacking firmness
③ slow, weak, or insufficient
In modern everyday Japanese, the first meaning—physical heaviness and difficulty moving—is central. The casual “what a drag” usage can be understood as an extension from physical heaviness to psychological or motivational heaviness.
The exact deeper etymology is not certain enough to present as one established fact. Some discussions connect the form with words related to looseness or bodily weariness, but learners should avoid treating speculative explanations as proven history.
The Kanji 怠 in 怠い
The kanji 怠 is a phonetic-semantic character made from 心 and the sound component 台.
heart / mind台
mainly supplies the historical sound
怠
to neglect, be idle, loosen one’s effort, or be sluggish
Words using 怠 include:
to neglect / fail to do怠ける (namakeru)
to be lazy / slack off
怠惰 (taida)
laziness / idleness
怠慢 (taiman)
negligence / carelessness
倦怠感 (kentaikan)
a feeling of weariness, malaise, or listlessness
However, because だるい is normally written in hiragana, learners should recognize the kanji without feeling that they must use it in ordinary messages.
A Note About Physical Symptoms
体がだるい is an everyday way to describe bodily sluggishness. It can follow ordinary tiredness or insufficient rest, but it may also be used when a person feels unwell.
For language learning, remember:
体がだるいです。
My body feels sluggish.
だるさが続いています。
The sluggish feeling has continued.
熱があって、全身がだるいです。
I have a fever, and my whole body feels heavy.
If severe or persistent physical sluggishness is affecting daily life, treat it as a health concern rather than only a vocabulary example and consider seeking appropriate medical advice.
FAQ About だるい
What does darui mean in Japanese?
だるい (darui) primarily means physically sluggish, heavy, or lacking energy. In casual speech, it can also mean bothersome, exhausting, or “what a drag.”
How do you say “I feel sluggish” in Japanese?
Say 体がだるい (karada ga darui). A polite version is 体がだるいです.
Is darui slang?
The physical meaning is ordinary standard Japanese. Using だるい to dismiss a task as “a drag” is more casual, and shortened forms such as だるっ or だりぃ are strongly informal.
What does darui mean in anime?
It may mean that a character feels physically sluggish, or that they find a task annoying and not worth the effort. Rough characters may say だりぃ.
What is the difference between darui and tsukareta?
疲れた means tired because physical or mental energy has been used. だるい emphasizes bodily or motivational heaviness and reluctance to move.
What is the difference between darui and nemui?
眠い means sleepy and close to wanting sleep. だるい means the body feels heavy or sluggish. A person can feel one without the other.
What is the difference between darui and shindoi?
だるい focuses on heaviness and low energy. しんどい describes something physically or emotionally hard, exhausting, or painful to endure.
What is the difference between darui and mendokusai?
面倒くさい focuses on a task being troublesome or complicated. だるい focuses on the speaker’s heavy, unmotivated reaction to doing it.
Does darui mean lazy?
Not usually. だるい describes a feeling or condition. “Lazy person” is 怠け者, and “to slack off” is 怠ける.
How do you write darui in kanji?
It can be written 怠い, but the hiragana spelling だるい is much more common in ordinary modern writing.
What does daruku mean?
だるく is the adverbial form of だるい. It appears in expressions such as だるくなる (“become sluggish”) and だるく感じる (“feel sluggish”).
What does darusō mean?
だるそう means “looks sluggish,” “looks tired,” or “looks unenthusiastic.” It describes an impression based on appearance or behavior.
What does darusa mean?
だるさ is the noun form and means sluggishness, bodily heaviness, or listlessness.
What does darii mean?
だりぃ is a rough contraction of だるい. It may mean “I feel wiped out” or “What a freaking drag.” It is not appropriate in polite conversation.
Is だるい rude?
The physical statement 体がだるい is neutral. Calling another person’s request or an obligation だるい can sound dismissive, and forms such as だりぃ may sound rude.
Can I say だるい at work?
You can use 体がだるいです to report a physical condition. Saying a work assignment is だるい is very casual and may sound unprofessional.
Is お疲れ様 related to だるい?
No. だるい describes sluggishness or a bothersome feeling. お疲れ様 is a conventional expression acknowledging another person’s work or effort. See What Does お疲れ様 (Otsukaresama) Mean?
Summary: The Meaning and Usage of だるい
だるい means physically sluggish, heavy, drained, or reluctant to move.● Casual extended meaning
It can describe a task or situation as exhausting, bothersome, or “a drag.”
● Writing
Usual spelling: だるい
Kanji: 怠い
Romaji: darui
● Grammar
だるい is an い-adjective.
だるくない = not sluggish
だるかった = felt sluggish
だるくなる = become sluggish
だるくて = because one feels sluggish
だるそう = looks sluggish
だるさ = sluggishness
● Key differences
疲れた = tired; energy has been used
眠い = sleepy; the body wants sleep
だるい = heavy and reluctant to move
しんどい = physically or emotionally hard
面倒くさい = troublesome or complicated
かったるい = more colloquial “sluggish / what a drag”
● Core image
Your body or motivation feels heavy, so movement and action require effort.
Remember the simplest contrast:
疲れた ⇒ “My energy has been used up.”
眠い ⇒ “My body wants sleep.”
だるい ⇒ “My body or motivation feels heavy.”
面倒くさい ⇒ “The task is troublesome.”
Once you connect だるい with heaviness and reluctance to move, both its physical and casual meanings become much easier to understand!
References
- Kotobank: 怠い — definitions, literary form, historical meanings, examples, and derived words.
- Kanjipedia: だるい — definition of bodily sluggishness and lack of strength.
- Kanjipedia: 怠 — readings, meanings, and kanji formation.
- Kotobank: かったるい — meanings and historical connection with かいだるい.
- Kotobank: 腕弛い — older expression describing tired arms or a tired body.
- Kotobank: 気怠い.
- Kotobank: 面倒臭い.
- Kanjipedia: 倦怠感.