Someone who loses or fails, or a person who is unpopular or unsuccessful, often considered mean slang.
From the verb 'lose' (Old English 'losian') plus the suffix '-er'; it started as a neutral term for someone who loses and became derogatory slang in the 20th century.
The word 'loser' as an insult is relatively new—before the 1970s-80s, it was just a neutral description, but pop culture and movies transformed it into one of the harshest schoolyard insults.
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