/ Thesaurus / O Synonyms of obligate anaerobe Find synonyms for: Noun1. obligate anaerobe, anaerobeusage: an organism that cannot grow in the presence of oxygenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language