i-adjective
sleepy; drowsy
Describes the feeling of wanting to sleep; used in everyday conversation. The reading ねぶたい is a rare dialectal or old-fashioned variant.
昨夜あまり寝られなかったので、今日はとても眠たい。
I couldn't sleep much last night, so I'm very sleepy today.
暖かい部屋で本を読んでいたら、眠たくなってきた。
Reading a book in a warm room made me feel drowsy.