<p><strong>Noun:</strong></p><ul><li>a person, team, nation, etc., that loses: The visiting team was the loser in the series.</li><li>Informal: a person who has been convicted of a misdemeanor or, especially, a felony: a two-time loser.</li><li>a person who has failed at a particular activity: a loser at marriage.</li><li>someone or something that is marked by consistently or thoroughly bad quality, performance, etc.: Don't bother to see that film, it's a real loser.</li><li>Slang: a misfit, especially someone who has never or seldom been successful at a job, personal relationship, etc.</li></ul>