wary

cautious, circumspect, wary, chary mean prudently watchful and discreet in the face of danger or risk. cautious implies the exercise of forethought usually prompted by fear of danger <a cautious driver>. circumspect suggests less fear and stresses the surveying of all possible consequences before acting or deciding <circumspect in his business dealings>. wary emphasizes suspiciousness and alertness in watching for danger and cunning in escaping it <keeps a wary eye on the competition>. chary implies a cautious reluctance to give, act, or speak freely <chary of signing papers without having read them first>.