Pretty  —adj. (-ier, -iest) 1 attractive in a delicate way (pretty girl; pretty dress). 2 fine or good of its kind. 3 iron. Considerable, fine (a pretty penny). —adv. Colloq. Fairly, moderately. —v. (-ies, -ied) (often foll. By up) make pretty.  pretty much (or nearly or well) colloq. Almost; very nearly.  prettily adv. Prettiness n. [old english]