5 letters · 5 points in Scrabble
noun a contestant who loses the contest
noun a person with a record of failing; someone who loses consistently
noun a gambler who loses a bet
originFrom Middle English loser, losere, equivalent to lose + -er. In the sense of contemptible or worthless individual, perhaps an alteration of losel, which see.
Etymology from Wiktionary, CC BY-SA 3.0