Here's what rhymes with ringworld.
world whirled curled hurled swirled furled twirled unfurled underworld netherworld Words that almost rhyme with ringworld
whirred word heard third turned learned served bird burned emerged termed curved herd incurred inferred merged purged curd interred surged yearned churned curbed furred sherd swerved gird nerved purred occurred returned reserved affirmed stirred blurred adjourned spurred unheard spurned unlearned demurred scourged slurred squirmed unearned unnerved leisured observed concerned referred confirmed absurd disturbed conferred deserved deferred discerned concurred conserved deterred reaffirmed converged diverged perturbed recurred preferred preserved transferred submerged overheard overturned undeserved unobserved unperturbed unreserved disinterred hummingbird undeterred undisturbed unconcerned unconfirmed