From Longman Dictionary of Contemporary Englishloserlos‧er /ˈluːzə $ -ər/ ●●○ noun [countable] 1 WORSEsomeone who is in a worse situation than they were, because of something that has happened OPP winner If the strike continues, the people of Galway will be the real losers.2 FAILsomeone who is never successful in life, work, or relationships What a loser! The guy’s a born loser.3 LOSE A GAME, COMPETITION, OR WARsomeone who has lost a competition, game, election etc OPP winnergood/bad loser (=someone who behaves well or badly after losing)
Examples from the Corpus
loser• A winner, obviously, until he became a loser.• Add legal fees and a new valuation and you could be on a loser.• You're just a bad loser Phil, that's your problem.• If these budget cuts are made, the big losers will be the poor and minorities.• Cotton may be the biggest loser, but Perry is just as worried for the cattlemen.• First, funds would try to sell their highest-cost losers.• Presidential losers have also habitually opted for mates designed to unify the ticket but with whom they could comfortably identify.• I'd like to congratulate all our entrants, the winners and the losers.• The losers are the singers and orchestras we employed.• The losers walked slowly off the field.good/bad loser• There's room for everyone and no-one likes a bad loser.• He wanted to be a winner rather than a good loser.• Elite performers earn that title because they are, by nature, not good losers.• The good loser is recognisable as the competitor who nods with rueful admiration each time the opponent scores.• The good loser never makes it to the winner's rostrum of any worthwhile competition.From Longman Business Dictionaryloserlos‧er /ˈluːzə-ər/ noun [countable]FINANCE a share that decreases in value on a particular day of trading on a stockmarketAutomakers were among the biggest losers this week, hurt by news about reduced production schedules. → compare gainer 