How to say "sleepy" in Japanese

Choosing the right word
  • 眠いねむいJLPT N4approx.Common
    i-adjectiveThe all-purpose word for the feeling of needing sleep: heavy eyelids, drowsiness, wanting to doze off. Use it for any 'I'm sleepy' moment, whether late at night or in the middle of the afternoon.
    彼かれは眠ねむくて瞼まぶたが重おもかった。↗
    His eyes were heavy with sleep.
  • 眠たいねむたいJLPT N1approx.Common
    i-adjectiveNear-synonymous with 眠い and generally interchangeable with it; it often carries a somewhat stronger, more insistent feeling of drowsiness, as when you can barely keep your eyes open.
    その薬くすりを飲のむと私はとても眠ねむたくなりました。↗
    The medicine made me very sleepy.

Both words mean feeling sleepy and are largely interchangeable; 「眠い」 is the all-purpose choice, while 「眠たい」 says much the same thing, often with a slightly stronger or more insistent feeling of drowsiness.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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