/ Thesaurus / A Synonyms of ad interim Find synonyms for: Adverb1. ad interimusage: for an intervening time; temporarily; "elected to serve ad interim"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language