/ Thesaurus / I Synonyms of inst. Find synonyms for: Adjective1. instant, inst, present(prenominal) (vs. future) (vs. past)usage: in or of the present month; "your letter of the 10th inst"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language