Encumber rhymes with:
unencumber, unencumber, cumber, macumber, mccumber, unencumber, cumber, humber, lumber, macumber, mccumber, number, outnumber, slumber, unencumber
unencumber, unencumber, cumber, macumber, mccumber, unencumber, cumber, humber, lumber, macumber, mccumber, number, outnumber, slumber, unencumber