1. on one's guard against danger or trickery; cautious مراقب در برابر خطر یا فریب ، محتاط a. Marilyn's mother told her to be wary of strangers with a gleam in their eye. b. After Orlando had been the victim of a cheat, he was wary of those who said they wanted to help him. c. Living in a polluted city makes you wary of the air you breathe.