Rigors rhymes with:
driggers, triggers, biggers, chiggers, diggers, driggers, nigger's, niggers, siggers, triggers, wiggers
Rigors sounds like:
racehorse, racehorses, racers, rackers, raisers, rakers, raucher's, razor's, razors, reassures, recharge, recourse, recross, regress, requires, rescuers, reseachers, research, research's, researches, resource, resources, resources', richcreek, rickers, riechers, rigorous, riker's, rikers, rockers, rockrose, roger's, rogers, rogers', rogers's, rosaria's, rosaries