Here's what rhymes with unsweetened.
sweetened neatened Words that almost rhyme with unsweetened
deepened cheapened steepened regent decedent weakened heated seated reasoned cheated seasoned unheated unseasoned dieted fleeted rezoned viand beetled sleeted tweeted weaselled treated greeted conceited viscid wheedled sequined geode resoled dieseled needed completed defeated yielded deleted secreted ceded peopled heeded seeded deeded reheated subpoenaed concreted inveigled needled trialled unseeded pleaded retreated excreted enfeebled preheated tableland unequaled obsoleted concertinaed succeeded exceeded receded spreadeagled reseeded proceeded superseded stampeded