Treacherous rhymes with:
lecherous, adventurous, lecherous, rapturous, adulterous, adventurous, amorous, avarice, barbarous, boisterous, cancerous, cantankerous, carboniferous, carnivorous, coniferous, dangerous, decorous, fossiliferous, generous, glamorous, hatteras, herbivorous, heterosporous, homosporous, humerous, humerus, humorous, insectivorous, lazarus, lecherous, murderous, numerous, obstreperous, odorous, omnivorous, onerous, overgenerous, oviparous, ovoviviparous, phosphorous, phosphorus, ponderous, precancerous, preposterous, prosperous, rancorous, rapturous, rhinoceros, rigorous, slanderous, sonorous, temerous, tetramerous, thunderous, timorous, traitorous, unglamorous, uterus, vigorous, viviparous, vociferous
Treacherous sounds like:
theatergoers, torregrossa, tracers, trackers, treasurer's, treasurers, treasures, treasuries, treasury's, treasurys, tricarico, triggers, trousers, truckers, truckers'