/ Thesaurus / K Synonyms of killer whale Find synonyms for: Noun1. killer whale, killer, orca, grampus, sea wolf, Orcinus orca, dolphinusage: predatory black-and-white toothed whale with large dorsal fin; common in cold seasWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language