Renunciation

noun a solemn renunciation of a belief, claim, or cause

• The defendant's abjuration of any involvement in the crime was met with skepticism by the jury.
• I don't buy his abjuration of knowing about the surprise party.
• Her abjuration of cheating on the test was so obvious.
• The artist's abjuration of traditional techniques led to a unique and innovative style.

noun the act of renouncing or rejecting something, self-denial

• The monk's life was characterized by a strict abnegation of worldly pleasures.
• She practiced abnegation by giving up her favorite dessert for Lent.
• Dude, that level of abnegation is just crazy!
• In order to achieve success, one must practice abnegation of distractions and focus on their goals.