1.
sleepy, drowsy
Feeling the need or desire to sleep. The state of being tired and wanting to sleep.
眠い is an i-adjective describing the state of feeling sleepy or drowsy.
FORMS:
- Verb: 眠る (to sleep)
- Noun: 眠り (sleep), 眠さ (sleepiness)
- Adverb: 眠く (眠くなる = to become sleepy)
COMMON EXPRESSIONS:
- 眠くなる: to become sleepy
- 眠そう: to look sleepy
- とても眠い: very sleepy
- 眠くて仕方ない: so sleepy I can't help it
- 眠い目をこする: to rub sleepy eyes
KANJI COMPOUNDS:
- 睡眠: sleep (formal)
- 睡眠不足: lack of sleep
- 仮眠: nap
- 安眠: restful sleep
SIMILAR WORDS:
- 疲れた: tired (physical exhaustion)
- だるい: sluggish, listless
- 眠たい: sleepy (variant, slightly more casual)
NOTE:
眠い specifically describes wanting to sleep, while 疲れた is about physical/mental exhaustion. You can be 疲れた without being 眠い, and vice versa.