A person or thing that is doomed, ruined, or no longer able to be saved.
Formed from the past participle 'gone' plus '-er' (one who is); American slang term that emerged in the 1800s, following English patterns of making nouns from verbs.
The word 'goner' is pure American slang creativity—somebody just took the word 'gone' and added '-er' to make it a noun, and it stuck because it perfectly captured that defeated feeling of hopelessness.
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