Synonyms of sleepless

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

2. lidless, sleepless, alert (vs. unalert), watchful

usage: always watchful; "to an eye like mine, a lidless watcher of the public weal"- Alfred Tennyson

Definition and meaning of sleepless (Dictionary)