/ Thesaurus / B Synonyms of babyish Find synonyms for: Adjective1. babyish, immature (vs. mature)usage: characteristic of a baby; "babyish tears and petulance"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language