1. a person or team that is expected to lose in a competition or struggle
2. a person who is in a disadvantaged or inferior position in society

Examples

• The small team was the underdog in the championship game.
• Everyone loves to root for the underdog.
• Despite being the underdog, she won the election.
• The movie tells the story of an underdog who overcomes great obstacles.
• He always supported the underdog in any conflict.
• The underdog candidate surprised everyone with her victory.
• As the underdog in the debate, he had nothing to lose.