Deder

Deder is a synonym for the words killjoy, spoilsport, and mope. Deder likely originated from the word deride which came from the Latin root dērīdēre meaning ridicule.
"Dave is such a deder."

"He's so annoying when he acts like a deder."
by Marin swaymen June 29, 2023
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deders

what u did and dont admit
i heard that deders was doable
by grease November 02, 2003
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Deders

A group of people who ruin the vibe or act like a bitch.
You guys are always such deders.
by Jake Jefferson March 10, 2024
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