/ Thesaurus / S Synonyms of sea robber Find synonyms for: Noun1. pirate, buccaneer, sea robber, sea rover, plunderer, pillager, looter, spoiler, despoiler, raider, freebooterusage: someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language