Source : WordNet®

sassy
     adj : improperly forward or bold; "don't be fresh with me";
           "impertinent of a child to lecture a grownup"; "an
           impudent boy given to insulting strangers" [syn: {fresh},
            {impertinent}, {impudent}, {overbold}, {smart}, {saucy}]
     [also: {sassiest}, {sassier}]