A contestant is someone who takes part in a competition or contest. A COMBATANT is a person who fights in a battle, while a CANDIDATE is someone who is nominated for an office or position. An ADVERSARY is an opponent or enemy, and a BATTLER is someone who fights or struggles. A CHALLENGER is someone who issues a challenge, and a PARTICIPANT is someone who takes part in an activity. An ATHLETE is someone who competes in sports, and a PLAYER is someone who takes part in a game. An ASPIRANT is someone who seeks or strives for something, and a RACER is someone who competes in a race. A COMPETITOR is someone who takes part in a competition, and a vier is someone who competes for something. An ENTRY is a person or thing that enters a competition, and an ENTRANT is someone who enters a competition. A CONTENDER is someone who competes for something, and an enterer is someone who enters a competition.