Here's what rhymes with fidious.
tedious perfidious Words that almost rhyme with fidious
medias cyclopaedias cyclopedias encyclopedias encyclopaedias devious mediates easiness vitiates freesias previous obedience deviance leakiness cheekiness sleaziness sneakiness steeliness wheeziness uneasiness obsequious prescience sleepiness deviants dreariness expedience greasiness novitiates queasiness breeziness creakiness squeakiness homogeneous disobedience expedients beastliness unwieldiness ingredients intermediates priestliness inexpedience inhomogeneous gastrocnemius