一夜无眠 yīyèwúmián to have a sleepless night Origin Definitions Defs Strokes Stroke Words Sentences Sents 一夜 yīyè numeralnoun all night one night or throughout the night无 無 wú adjectiveverb to not have to not have; there is no; lack; (as prefix) non-; un-; -less眠 mián verb to sleep (bound form) to sleep; to slumber; also used in words like 睡眠 shuìmián