Here's what rhymes with curviest.
nerviest scurviest Words that almost rhyme with curviest
earthiest earthliest worthiest unearthliest unworthiest noteworthiest praiseworthiest earliest curliest dirtiest murkiest burliest quirkiest wordiest nerdiest pearliest perkiest chirpiest jerkiest sturdiest thirstiest worldliest luxuriant subservient unworldliest