/ Thesaurus / I Synonyms of input signal Find synonyms for: Noun1. input signal, input, signal, signaling, signusage: signal going into an electronic systemWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language