Word Study
keep one's eyes open
ROGET THESAURUS
keep one's eyes open
Care
VB be careful, reck, take care, pay attention to, take care of, look to, look after, see to, see after, keep an eye on, keep a sharp eye on, chaperon, matronize, play gooseberry, keep watch, keep watch and ward, mount guard, set watch, watch, keep in sight, keep in view, mind, mind one's business, look sharp, look about one, look with one's own eyes, keep a good lookout, keep a sharp lookout, have all one's wits about one, have all one's eyes about one, watch for, keep one's eyes open, have the eyes open, sleep with one's eye open.For further exploring for "keep one's eyes open" in Webster Dictionary Online