Breadcrumb Home > Dictionary > Index G good afternoon: Meaning and Definition of Find definitions for: good" afternoon' Pronunciation: [key] a conventional expression used at meeting or parting in the afternoon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. good good behavior ✖ Related Content Daily Word Quiz: umbrage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language