/ Thesaurus / I Synonyms of indelible ink Find synonyms for: Noun1. indelible ink, inkusage: ink that cannot be erased or washed awayWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language