wet blanket

idiom

- a person who dampens enthusiasm or enjoyment; a spoilsport

- a person who says or does something that stops other people from enjoying themselves

- one that quenches or dampens enthusiasm or pleasure

- if you refer to someone as a wet blanket, you mean that they ruin other people's fun by being negative and gloomy

Oxford English Dictionary, Cambridge Dictionary,  Merriam-Webster, Collins English Dictionary
 
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PHRASE ORIGIN



The expression originates from early 19th-century firefighting practices. Before fire extinguishers and specialised equipment were commonplace, a heavy wool blanket soaked in cold water was the standard domestic tool used to smother small, emerging fires by cutting off their oxygen supply.


By the 1830s, American writers had turned the physical object into a vivid psychological metaphor: a person whose presence or comments instantly extinguish the "spark" of enthusiasm, conversation, or merriment in a room.
 
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DEVIL’S ADVOCATS


Nobody wants to be the wet blanket. But most groups need one.

You know the moment. Someone floats a big idea, the room lights up, everyone's nodding — and then one person says, "Hang on, what if it doesn't work?" 
That's the wet blanket,... and they're sometimes right.


There's a name for what goes wrong when nobody plays that role. The psychologist Irving Janis called it “Groupthink”: once a group gets excited, doubt starts to feel like betrayal, so everyone keeps quiet and the bad idea sails through unchecked.


The Catholic Church understood this centuries ago. When deciding whether to make someone a saint, they appointed a person to argue against it — the devil's advocate. The point was simple: if everyone agrees straight away, nobody's really thinking.

Helga & Paul Smith
 
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SYNONYMS

buzzkill, dampener, doom-monger, downer, grouch, killjoy, misery, naysayer, party pooper, pessimist, sourpuss, spoilsport, stick-in-the-mud, sourpuss, WET BLANKET

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SMUGGLE OWAD into a conversation today, say something like:

"Is a WET BLANKET a pessimist,... or just a realist?"

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