眠い
ねむい · nemui · JLPT N4 · i-adj
sleepy
🛏️ 眠い = 眠 (sleep) + い adjective ending: sleep-ish, so sleepy
眠 is the sleep kanji, also found in 眠る (nemuru, to sleep) and 睡眠 (suimin, sleep). Swap the verb ending る for the adjective ending い and to sleep becomes sleepy. Sound hook: nemui starts like nemuru.