open-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" [syn: {argus-eyed}, {open-eyed}, {vigilant}, {wakeful}]
Open-eyed \O"pen-eyed`\, a. With eyes widely open; alert to possible danger; watchful; vigilant. --Shak. Syn: argus-eyed, hawk-eyed, unsleeping, vigilant, wary, watchful. [1913 Webster + WordNet 1.5]