Here's what rhymes with costain.
pain chain stain pane bane tain deign main brain gain plain plane rain reign strain train attain ln vain vein cane drain slain lane sane terrain fain lain rein mane ordain twain vane wane certaine feign skein urbane sprain swain arraign thane wain contain obtain campaign domain grain retain sustain ascertain champagne cocaine disdain abstain crane detain pertain germane inane moraine overlain chicane murrain explain maintain remain complain insane refrain humane profane regain restrain constrain hurricane mundane arcane butane humaine appertain romaine retrain reattain entertain aeroplane sugarcane cellophane halothane urethane coxswain ingrain wholegrain preordain inhumane monoplane windowpane hydroplane foreordain reexplain legerdemain polyurethane demimondaine Words that almost rhyme with costain
tame dame same came name game frame blame fame flame shame lame maim became claim overcame aflame defame acclaim inflame rename declaim aspartame ballgame forename proclaim exclaim reclaim filename disclaim selfsame quitclaim counterclaim