/ Thesaurus / I Synonyms of in utero Find synonyms for: Adverb1. in uterousage: in the uterus; "the child was infected in utero from the mother"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language