/ Thesaurus / F Synonyms of fog signal Find synonyms for: Noun1. foghorn, fogsignal, alarm, alert, warning signal, alarumusage: a loud low warning signal that can be heard by fogbound shipsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language