Timorous rhymes with:
amorous, glamorous, humerous, humerus, humorous, numerous, temerous, tetramerous, unglamorous, 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, traitorous, treacherous, unglamorous, uterus, vigorous, viviparous, vociferous
Timorous sounds like:
tamarac, tamargo, tamarisk, tamarisks, tamraz, tamraz's, tamres, teamwork, temerous, tenors, tenrecs, tenures, timers, timmers, timor's, timorese, tomorrow's, tomorrows, towners, tumeric, tumors