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