Breadcrumb Home > Thesaurus > I Synonyms of insider Find synonyms for: Noun 1. insider, corporate executive, business executive usage: an officer of a corporation or others who have access to private information about the corporation's operations WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of insider (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: raconteur Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language