/ Thesaurus / F Synonyms of fountain pen Find synonyms for: Noun1. fountain pen, penusage: a pen that is supplied with ink from a reservoir in its barrelWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language