Here's what rhymes with hypersomniac.
back lack pack nach rack sac sack hack jack tack fac knack lac shack mac mak maniac tak whack wrack yak mack wack yack black attack track crack stack plaque slack aback smack snack flak quack unpack clack claque flack insomniac repack anorak thumbtack cardiac almanac elegiac shellac zodiac demoniac hardtack ipecac amnesiac gunnysack highjack mudpack haversack lumberjack piggyback rickrack skyjack paperback nymphomaniac applejack crackerjack razorback pickaback counterattack quarterback megalomaniac stickleback steeplejack Words that almost rhyme with hypersomniac
bag lag tag rag gag hag wag fag mag nag sag zag dag shag flag drag slag stag brag crag snag swag blag toerag dishrag fleabag scrag washrag nosebag chinwag saddlebag scallywag wigwag sleazebag lollygag lallygag scalawag bank task rank tank thank mask sank cask masque shank bask dank hanc lank talc hank yank basque blank drank flank flask frank crank plank shrank franc prank antitank clank spank stank unmask swank embank outrank charabanc riverbank databank pointblank