/ Thesaurus / S Synonyms of subpoena ad testificandum Find synonyms for: Noun1. subpoena, subpoena ad testificandum, writ, judicial writusage: a writ issued by court authority to compel the attendance of a witness at a judicial proceeding; disobedience may be punishable as a contempt of courtWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language