unmake vs undo

unmake and undo both are verbs.

Word	Noun	Adjective	Verb	Adverb
unmake	No	No	Yes	No
undo	No	No	Yes	No

As verbs, unmake and undo are synonyms defined as:

unmake (verb)	undo (verb)
deprive of certain characteristics	cancel, annul, or reverse an action or its effect
	cause to become loose
	remove the outer cover or wrapping of
	deprive of certain characteristics
	cause the ruin or downfall of