| 1. | a blanket dampened with water so as to extinguish a fire. |
| 2. | a person or thing that dampens enthusiasm or enjoyment: Nobody asked him to join the group because he's such a wet blanket. |
[wet-blang-kit] 
| 1. | to extinguish (a fire) with a wet blanket. |
| 2. | to dampen the enthusiasm or enjoyment of (a person, group, etc.). |
Someone who dampens enthusiasm: “We were all having a good time until Harold walked in and started acting like a wet blanket.”
wet blanket
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