disown vs repudiate

disown and repudiate both are verbs.

Word	Noun	Adjective	Verb	Adverb
disown	No	No	Yes	No
repudiate	No	No	Yes	No

As verbs, disown and repudiate are synonyms defined as:

Other synonyms of disown include renounce.

disown (verb)	repudiate (verb)
cast off	refuse to acknowledge, ratify, or recognize as valid
prevent deliberately (as by making a will) from inheriting	cast off
	reject as untrue, unfounded, or unjust
	refuse to recognize or pay