Killjoy

Noun

 * 1) A person who is anti-fun, or prevents others from having fun

Synonyms

 * miserabilist

Thesaurus
Cassandra, Eeyore, calamity howler, crepehanger, cynic, damp, dampener, damper, defeatist, gloomy Gus, grouch, grump, malcontent, malist, negativist, nihilist, pessimist, prophet of doom, retreatist, seek-sorrow, sourpuss, spoilsport, wet blanket, worrywart

Etymology
, first attested in 1776.

Translations

 * Estonian:
 * Finnish: ilonpilaaja
 * French:
 * German:


 * Icelandic:
 * Italian:
 * Spanish:
 * Swedish: glädjedödare