General Antonyms:
* Embrace: To accept or welcome something willingly.
* Accept: To agree to take or receive something.
* Claim: To state that something belongs to you or is true.
* Affirm: To state something confidently and publicly.
* Support: To give assistance to someone or something.
* Uphold: To maintain or defend something.
* Advocate: To publicly support or recommend something.
* Endorse: To give your approval or support to something.
* Retain: To keep something.
* Maintain: To keep something in good condition.
* Preserve: To keep something safe from harm or change.
Antonyms Related to Specific Contexts:
* Claim (a title, a right): Instead of renouncing a title or right, someone might claim it.
* Embrace (a faith): Instead of renouncing a faith, someone might embrace it.
* Reassert (a claim): Instead of renouncing a claim, someone might reassert it.
* Reaffirm (an allegiance): Instead of renouncing an allegiance, someone might reaffirm it.
The best antonym will depend on the specific situation and the intended meaning of the sentence.