The term UNDERDOG, OFTEN is represented by the crossword solution CHALLENGER (10 letters). An underdog is someone who is at a disadvantage in a competition or struggle, often due to lack of resources or support. The term is often used to refer to a person or group that is expected to lose a contest or battle, but despite the odds, they may still emerge victorious. The term CHALLENGER is often used to refer to someone who is competing against an established leader or champion.