Tougher rhymes with:
stouffer, stuffer, bluffer, buffer, duffer, huffer, nuffer, puffer, rougher, ruffer, snuffer, stouffer, stuffer, suffer
Tougher sounds like:
tacker, tager, takara, takecare, taker, taser, tashiro, tasker, taucher, tauscher, taxer, teacher, teaser, teicher, teixeira, tejera, tesar, tesoriero, tesoro, tessier, teuscher, texeira, thacher, thacker, thackeray, thakkar, thaser, thatcher, thicker, thuggery, ticer, ticker, ticor, tigar, tiger, tigera, tischer, tisher, titzer, tokar, tooker, toothaker, toshiharu, tozer, tozier, tsar, tucker, tweezer, tygar, tyger