argus-eyed

adj

1

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

Synonym: open-eyed vigilant wakeful

2

having very keen vision

quick-sighted as a cat

Synonym: hawk-eyed keen-sighted lynx-eyed quick-sighted sharp-eyed sharp-sighted