wet blanket

wet blanket (plural wet blankets)

1. (idiomatic) A person who takes the fun out of a situation or activity, as by pessimism, demands, dullness, etc.
2. Used other than with a figurative or idiomatic meaning: see wet,‎ blanket.

• buzzkill, killjoy, spoilsport; see also Thesaurus:spoilsport

wet blanket (third-person singular simple present wet blankets, present participle wet blanketing, simple past and past participle wet blanketed)

1. Alternative form of wet-blanket
   • 2014, Helen Oyeyemi, Boy, Snow, Bird, →ISBN:

     I say almost because I could still hear Ted trying his best to wet blanket Webster's Halloween costume idea.

   • 1926, United States. Forest Service, Forest Research Bi-Monthly Report, page 33:

     The secretary of the state retail association recently seen wet blanketed the whole thing, doubting the possibility of representative figures, or of getting the dealers to tell the truth, at least when business was poor and they begin to cut the prices of their competitors.

   • 1911, American Motherhood - Volumes 32-33, page 311:

     Nevertheless there is a certain handicap to the child who has been snubbed, mocked, jeered, wet blanketed and undervalued.