Unmanage rhymes with:
micromanage, mismanage, micromanage, mismanage, carnage, coinage, greenidge, grinage, harnage, linage, micromanage, mismanage, parsonage, patronage, signage, turnage
Unmanage sounds like:
umansky, umass, unanimous, unease, uneasy, unesco, ung, ungo, unhinge, unhook, unigesco, union's, unionize, unions, unions', unique, unisex, unisys, unisys', unisys's, unix, unmask, unos, unwise, unz