1.
Masochism is behaviour in which someone gets sexual pleasure from their own pain or suffering.
The tendency towards ~ is however always linked with elements of sadism.
? sadism
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masochist (masochists)
...consensual sexual masochists.
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2.
If you describe someone’s behaviour as ~, you mean that they seem to be trying to get into a situation which causes them suffering or great difficulty.
Once you have tasted life in southern California, it takes a peculiar kind of ~ to return to a British winter.
? sadism
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masochist
Anybody who enjoys this is a masochist.
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3.
see also sado-~