argus-eyed argus-eyed /ˈɑːrɡəs-aɪd/

adjective

1. Carefully observant or attentive; on the lookout for possible danger  ( argus-eyed , open-eyed , vigilant , wakeful )
   carefully observant or attentive; on the lookout for possible danger
    A policy of open-eyed awareness
   a policy of open-eyed awareness
    The vigilant eye of the town watch
   the vigilant eye of the town watch
    There was a watchful dignity in the room
   there was a watchful dignity in the room
    A watchful parent with a toddler in tow
   a watchful parent with a toddler in tow
   
2. Having very keen vision  ( argus-eyed , hawk-eyed , keen-sighted , lynx-eyed , quick-sighted , sharp-eyed , sharp-sighted )
   having very keen vision
    Quick-sighted as a cat
   quick-sighted as a cat