wet sock
1. Someone who is not interesting or convivial, or who dampens other people's fun or enjoyment; a killjoy. More commonly called a "wet blanket." Don't invite Nicole to the party. She's such a wet sock that she'll probably just sit around complaining the whole time. David was tired of being called a wet sock by his friends just because he doesn't drink alcohol.
2. A weak, spineless, or cowardly person. We need someone strong to lead this company into the future, not some wet sock who's afraid of confrontation. I always thought my dad was a bit of a wet sock growing up, but I came to appreciate his empathy and humility as I got older.
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