titleholder
Definitions
A person or entity that currently holds a championship, award, or official title.
A person or organization that holds legal ownership or a claim to property or a document.
Examples
The reigning titleholder defended her championship belt with a decisive victory in the final round.
As the current titleholder of the regional chess tournament, he is expected to face a challenging match against the newcomer.
Synonyms
champion winner victor record holder gold medalist reigning king top seed
Antonyms
challenger runner-up loser defeated opponent non-winner underdog contender