A. Abdicate
B. Renounce
C. Possess
D. Deny
Relinquish : Voluntarily cease to keep or claim.
Abdicate : Renounce one’s throne.
Renounce : Formally declare one’s abandonment.
Possess : Have as belonging to one.
Deny : State that one refuses to admit the truth or existence of.
Antonym of Relinquish is Possess.