Blindly rhymes with:
kindly, bindley, blandly, brindley, chandley, fendley, findlay, findley, fondly, friendly, grandly, grindley, handley, handly, hendley, hindley, hundley, kindley, kindly, lindley, pendley, profoundly, roundly, secondly, soundly, spendley, standley, unfriendly, windley
Blindly sounds like:
blandly, blondell, blumenthal, blundall, blundell, bluntly