/ Thesaurus / T Synonyms of thematic vowel Find synonyms for: Noun1. stem vowel, thematic vowel, vowel, vowel soundusage: a vowel that ends a stem and precedes an inflectionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language