or prep·pie P0531800 (prĕp′ē)Informaln.pl.prep·pies1. A student or former student of a preparatory school.2. A person whose manner and dress are deemed typical of traditional preparatory schools.adj.prep·pi·er, prep·pi·est Of or relating to a preppy or a preparatory school.[prep(aratory school) + -y.]prep′pi·ly adv.prep′pi·ness n.
preppiness
(ˈprɛpɪnɪs) ninformal the fact of being preppy IdiomsSeepreppy