/ Thesaurus / U Synonyms of unintelligibly Find synonyms for: Adverb1. unintelligibly, ununderstandablyusage: in an unintelligible manner; "the foreigners spoke unintelligibly"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language