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