Words That Rhyme With "Endeavour" :
2 syllables:
bever, clever, ever, haver, lever, never, sever, Trevor
3 syllables:
dissever, endeavor, forever, however, soever, whatever, whenever, wherever, whichever, whoever, whomever
4 syllables:
howsoever, whatsoever, whencesoever, whensoever, wheresoever, whichsoever, whomsoever, whosesoever, whosoever