Canvass rhymes with:
canvas, canvas, canvas, beavis, bodhisattvas, canvas, chivas, corvus, covas, crevice, davis, davis', disservice, gervase, grievous, gustavus, holvis, holvis', jarvis, mischievous, navas, nervous, novice, pelvis, provus, service, synovus
Canvass sounds like:
cambex, camby's, camp's, campeau's, campise, campisi, campobasso, campos, camps, camps', campus, campuses, cannabis, canvas, canvases, canvasses, champoux, champs, chemfix, chimps, combes, combs, comeback, comebacks, compaq, compaq's, compas, compass, compose, composes, compus, compusa, compusa's, confess, confesses, confucius, confuse, confuses, convex, conveys, convoys, coombes, coombs, cumbias