Breadcrumb Home > Thesaurus > S Synonyms of scuba Find synonyms for: Noun 1. aqualung, Aqua-Lung, scuba, breathing device, breathing apparatus, breathing machine, ventilator usage: a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of scuba (Dictionary) ✖ Related Content Daily Word Quiz: umbrage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language