/ Thesaurus / A Synonyms of alarm clock Find synonyms for: Noun1. alarm clock, alarm, clockusage: a clock that wakes a sleeper at some preset timeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language