repudiate vs renounce

repudiate and renounce both are verbs.

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

As verbs, repudiate and renounce are synonyms defined as:

Other synonyms of repudiate include disown.

repudiate (verb)	renounce (verb)
refuse to acknowledge, ratify, or recognize as valid	cast off
cast off	turn away from; give up
reject as untrue, unfounded, or unjust	leave (a job, post, or position) voluntarily
refuse to recognize or pay	give up, such as power, as of monarchs and emperors, or duties and obligations