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