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