In fashion, a term used to describe clothing and accessories inspired by private-school style.

Preppy (also spelled preppie) is a chiefly North American adjective or noun traditionally used to describe the characteristics of those adhering to what is referred to as white Anglo-Saxon Protestants (WASPs) culture. Such individuals commonly attend or attended major private, secondary university-preparatory schools commonly associated with New England and the northeastern United States. These characteristics include particular subcultural speech, vocabulary, accent, dress, mannerisms, etiquette, and life view.

a US term for someone of smart appearance - collar & tie.