Here's what rhymes with lengthened.
strengthened Words that almost rhyme with lengthened
mentioned pensioned legend reckoned lessened errand reddened leavened second method threatened rested legged leveled levelled beckoned wrestled ebbed revelled deadened deafened freshened reveled elected ended headed settled arrested erected questioned tested melted vested rented herald nested threaded wedded crested emerald nestled shredded belted beveled breasted fetid freckled petted sectioned trebled bevelled chested meddled nettled peddled affected directed selected collected effected tended corrected tempted blended trembled predestined speckled resettled smelted penciled pencilled tented connected attempted attended protected reflected assembled detected infected invested neglected oriented projected splendid amended indebted injected objected offended protested ascended perfected resembled resented dissected infested ingested unquestioned unsettled intrepid bareheaded disheveled dishevelled inflected reelected embezzled emended imperiled millisecond unmentioned expected presented intended suggested depended invented suspected defended descended pretended augmented contested cemented congested fermented reassembled complexioned dissembled semiarid subtended extended recommended suspended manifested apprehended contented intercepted represented implemented documented supplemented disinfected disassembled undefended condescended superintended overextended