/ Thesaurus / S Synonyms of ship route Find synonyms for: Noun1. seaway, sea lane, ship route, trade route, laneusage: a lane at sea that is a regularly used route for vesselsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language