/ Thesaurus / A Synonyms of axillary cavity Find synonyms for: Noun1. armpit, axilla, axillary cavity, axillary fossa, cavity, bodily cavity, cavumusage: the hollow under the arm where it is joined to the shoulder; "they were up to their armpits in water"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language