FLIGHTY Meaning of FLIGHTY in English adj. (flightier, flightiest) 1 (usu. of a girl) frivolous, fickle, changeable. 2 crazy. flightily adv. flightiness n.[ FLIGHT(1) + -Y(1) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012