Here's what rhymes with morphinetreated.
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pleaded retouch needed ceded heeded seeded deeded reedit proceeded receded reseeded unseeded succeeded exceeded speedup superseded intercollegiate stampeded yielded reasoned viscid geode rezoned beetled trialled neatened resoled weakened seasoned sweetened subpoenaed viand dieseled weaselled deepened peopled cheapened tableland unsweetened needled unseasoned wheedled sequined unequaled inveigled steepened spreadeagled concertinaed enfeebled