un ‧ der ‧ dog /ˈʌndədɒɡ $ ˈʌndərdɒːɡ/ BrE AmE noun [countable]
a person, team etc that is weaker than the others, is always expected to be unsuccessful, and that is often treated badly:
Crowds often feel sympathy for the underdog.
un ‧ der ‧ dog /ˈʌndədɒɡ $ ˈʌndərdɒːɡ/ BrE AmE noun [countable]
a person, team etc that is weaker than the others, is always expected to be unsuccessful, and that is often treated badly:
Crowds often feel sympathy for the underdog.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012