/ Thesaurus / G Synonyms of grandad Find synonyms for: Noun1. grandfather, gramps, granddad, grandad, granddaddy, grandpa, grandparentusage: the father of your father or motherWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language