/ Thesaurus / I Synonyms of instinctively Find synonyms for: Adverb1. instinctivelyusage: as a matter of instinct; "he instinctively grabbed the knife"WordNet 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