vigilant

  • (s) carefully observant or attentive; on the lookout for possible danger
    • a policy of open-eyed awareness
    • the vigilant eye of the town watch
    • there was a watchful dignity in the room
    • a watchful parent with a toddler in tow
    open-eyed, wakeful, argus-eyed,

Synonyms

open-eyed wakeful argus-eyed

Words of close approximity

vigilante vigilantism vigilantly