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