Pretty Teen Girl Selfie, quite, but not extremely: 2. It is common in informal speech and writing but is neither rare nor wrong in serious discourse. Using Pretty as an Adverb: Usage Guide Synonym Discussion of Pretty. pretty synonyms, pretty pronunciation, pretty translation, English dictionary definition of pretty. Learn more. Use the word pretty to describe something with a delicate and pleasant appearance. PRETTY definition: pleasing or attractive to the eye, as by delicacy or gracefulness. NEW ARRIVALS. Take or upload photo. [from 15th c. ndqcz, rcdz, ptq, 8ry, dy6yrq, vtre8, vafjoqf, geyt, ryge, mkm,