/ Thesaurus / M Synonyms of minisubmarine Find synonyms for: Noun1. minisub, minisubmarine, submersibleusage: submersible vessel for one or two persons; for naval operations or underwater explorationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language