Synonyms for insomniac

Noun

1. insomniac, sleepless person, sick person, diseased person, sufferer

usage: someone who cannot sleep

Adjective

1. insomniac, sleepless, watchful, awake(predicate) (vs. asleep)

usage: experiencing or accompanied by sleeplessness; "insomniac old people"; "insomniac nights"; "lay sleepless all night"; "twenty watchful, weary, tedious nights"- Shakespeare