Wakeful — synonyms, definition

1. wakeful (a)

alert astir attentive awake circumspect heedful observant on the ball sleepless vigilant wary

2. wakeful (Adjective)

argus-eyed light open-eyed waking

wakeful (Adjective) — Carefully observant or attentive; on the lookout for possible danger. ex. "a policy of wakeful awareness"

wakeful (Adjective) — (of sleep) easily disturbed. ex. "a restless wakeful night"

wakeful (Adjective) — Marked by full consciousness or alertness.