a wet blanket
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Related to a wet blanket: same old same old, a white elephant, along the lines, worse for wear, To Say the Least
Someone who ruins other people's fun. Don't invite Nicole to the party. She's such a wet blanket that she'll probably just complain the whole time. David was tired of being called a wet blanket by his friends just because he doesn't drink alcohol.
a wet blanketINFORMAL
If you call someone a wet blanket, you mean that they stop other people from enjoying themselves by being boring or miserable. `Hey', said Thack, looking at Michael. `Stop being such a wet blanket.' I'm sorry if I've been a wet blanket today.
a wet blanketsomeone who has a depressing or discouraging effect on others.
A dampened blanket can be used to smother a fire; the image here is of a person extinguishing a lively or optimistic mood by their gloominess or negativity.
1991 Michael Curtin The Plastic Tomato Cutter When in the company of those of us who do succumb to the occasional dram Father Willie was never a wet blanket.
a ˌwet ˈblanket(informal, disapproving) a person who is not enthusiastic about anything and who stops other people from enjoying themselves: She was such a wet blanket at the party that they never invited her again. OPPOSITE: a live wire
A wet blanket can be used to help put out a fire.
wet blanket, a
A person or thing that spoils the fun. This term, alluding to a device used to smother a fire, has been around since the early nineteenth century. Mrs. Anne Mathews used it in Tea-Table Talk (1857): “Such people may be the wet blankets of society.”
See also: wet