From Longman Dictionary of Contemporary Englishleeryleer‧y /ˈlɪəri $ ˈlɪri/ adjective informal CAREFULcareful in the way that you deal with something or someone because you do not trust them SYN waryleery of I was very leery of him after I found out he had lied to Jennifer.
Examples from the Corpus
leery of• Landlords are often leery of renting to large families.Origin leery (1700-1800) Perhaps from leer “cheek”; → LEER 