LEERY Meaning of LEERY in English ■ adjective ( leerier , leeriest ) informal cautious or wary due to realistic suspicions.Derivativesleeriness noun OriginC17: from obs. leer 'looking askance', from leer + -y 1 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004