Synonyms of wide-awake

Adjective

1. unsleeping, wide-awake, awake(predicate) (vs. asleep)

usage: fully awake; "the unsleeping city"; "so excited she was wide-awake all night"

2. heads-up, wide-awake, alert (vs. unalert), watchful

usage: fully alert and watchful; "played heads-up ball"