/ Thesaurus / I Synonyms of inquiry agent Find synonyms for: Noun1. inquiry agent, private detective, PI, private eye, private investigator, operative, shamus, sherlockusage: a private detectiveWordNet 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