fop UK /fɒp/US /fɑp/ noun1 •(old-fashioned) A vain man; a dandy.And she nearly started a fight between two young fops in plumed hats and flouncy collars: "Clay-brained coxcomb!" "Mewling milk-livered maggot!" — 2010 formsfops
FOP adjective 1noun 4 adjective1 •Initialism of free of payment, delivery of securities with no corresponding payment of funds. noun4 •Initialism of form of payment. •(US, offensive) Initialism of flyover people: individuals who reside between the two coasts of the US, with the exception of a few major cities. •Initialism of freedom of panorama. •Initialism of fibrodysplasia ossificans progressiva.