Feeling sleepy or drowsy; used colloquially and often equivalent to 眠い.
今朝は寝不足でとても眠たい。
I'm very sleepy this morning because I didn't get enough sleep.
授業中に急に眠たくなった。
I suddenly got sleepy during class.
長い会議でだんだん眠たくなってきた。
I gradually became drowsy during the long meeting.