abnegator
/ˈæbnɪˌɡeɪtər/
noun
- A person who gives up or renounces something, such as a right, pleasure, or possession.
- As an abnegator of fame, the author refused all interviews and book signings.
- She became an abnegator of sweets after her doctor warned her about sugar.
- The monk was a true abnegator, giving up all his worldly goods for a life of prayer.
Antonyms