Abdiction(noun)
The action of giving up the position of being king or queen
Hindi meaning:राजगद्दी का त्याग करना
Synonyms: Relinquishment, Resignation, Abandonment, Renunciation
Antonyms: Coronation, Acceptance, Permit, Sacntion
Example: She told about the chain of events leading to the king's abdication.
Trick to remember: Abdiction ka addiction nhi hoga. 
