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