だるい: How to Express That Sluggish, Heavy Feeling in Japanese

Yuka

I hear だるい all the time in Japanese — is it about being lazy or feeling sick?

Rei

Both, actually! だるい describes that heavy, tired, sluggish feeling — when your body feels weighted down. It could be from fatigue, illness, or just not wanting to do anything. It’s a very relatable word!

What Does だるい (darui) Mean?

だるい is an i-adjective describing a feeling of physical heaviness, fatigue, or sluggishness. It is used when your body feels weighed down, achy, or lacking energy. In casual speech, it can also express reluctance or laziness toward something (“ugh, I don’t wanna”).

• 今日は体がだるい。 — My body feels heavy today.
• 風邪でだるい。 — I feel run-down from a cold.
• 朝からだるくて起きられなかった。 — I felt so sluggish since morning I couldn’t get up.
• あ～、だるい。 — Ugh, I don’t feel like it. (expressing reluctance/fatigue)

だるい for Physical Fatigue

When used about the body, だるい describes the heavy, achy feeling you get with illness, overwork, or lack of sleep. It is often combined with 体 (body) or 全身 (whole body).

• 全身がだるい。 — My whole body feels heavy/achy.
• 熱はないけど体がだるい。 — I don’t have a fever but I feel run-down.
• だるさが続く。 — The sluggishness continues.
• だるくて何もできない。 — I feel so sluggish I can’t do anything.

だるい for Reluctance

In casual speech, だるい is also used to express that something is a drag or that you don’t feel like doing something — similar to “ugh” or “this is such a pain.”

• 宿題、だるい。 — Homework is such a drag.
• 今日の会議、だるいな。 — Today’s meeting is going to be a pain.
• 起きるのだるい。 — I don’t feel like getting up.

Yuka

Is だるい rude to say? Like if a doctor asks how I feel?

Rei

To a doctor, 体がだるいです is totally natural and appropriate — it’s a recognized symptom. The casual “だるい” alone (expressing “ugh, I don’t want to”) is informal, so use it with friends, not in formal settings.

Related Words

Quick Quiz

Which expression fits best?

• 1. You woke up and your whole body feels achy and heavy. — (a) 眠い (b) 体がだるい (c) 疲れた
• 2. You don’t want to do your homework (it’s a drag). — (a) だるい (b) 眠い (c) 疲れた
• 3. After an intense workout you feel drained. — (a) だるい (b) しんどい (c) 眠い

Answers: 1. (b)　2. (a)　3. (b) — though all three can apply with slightly different nuances

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Summary

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