kiss off verb 3kiss-off noun 1forms 4 verb3 •to bid goodbye to (someone) with a kiss.My girlfriend came to kiss me off at the airport. •to dismiss casually; to sidetrack or shut down (someone); to reject or spurn. •(euphemistic) to leave; get lost, beat itWe're here, we're queer, we're fabulous, Get used to it. If you don't like it, kiss off. — 1990 kiss-off noun1 •(slang) A dismissal. formskissed off · kissing off · kisses off · kiss-offs