Synonyms:
argus-eyed, open-eyed, vigilant, wakeful
Meaning: 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"
Usage examples
Her haughty step waxed timorous and vigilant
The hostile scouts and sharpshooters had become too vigilant.
But they were only just in time to escape the vigilant eyes of a new visitor.
The night passed without incident, Tad Butler keeping a vigilant watch all during the dark hours of the night.
The look which he kept upon the basket was no less vigilant than before, but there was now a tinge of scorn in it.
The desperadoes formed the chief topic of discussion, even Don showed the bloodhound in him, and, ever since leaving Egan, showed unusual excitement and was more vigilant.
He came; and I had him escorted by eight or ten vigilant men, to whom I had given notice to watch his hands strictly. Before all of us he changed two pieces of lead into gold and silver.
Owen was still in the same state of moody abstraction as when Darrow had left him at the piano; and even Anna's face, to her friend's vigilant eye, revealed not, perhaps, a personal preoccupation, but a vague sense of impending disturbance.
Her captain fought her to the last; but Warren's boat crews took her. Some men who escaped from her brought du Chambon the news that a third French ship, the Vigilant, was coming to the relief of Louisbourg with ammunition and other stores. This ship had five hundred and sixty men aboard, that is, as many as all the regulars in Louisbourg.