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