uncumber means to disencumber. Lexicurio rates it Rare gem — a strength score of 84 out of 100.
Etymology
From un- + cumber.
verb
- To disencumber.“... St. Wilgeforte (famous for praying for a beard to protect her virtue, and getting one as long as the Persian king's) obtained the name of St. Uncumber in England because, for a peck of oats, she would uncumber any woman who was tired of her husband;...”