Reverse Dictionary: KILLJOY

NOUNS, PERSON (also see SPOILSPORT)
1879 WET BLANKET a person who dampens and smothers all enthusiasm; a person who prevents fun; a killjoy; a pessimist → Amer. sl.
1979 TRANK a person who takes the excitement out of something; a killjoy → US sl. 
1980 BUZZ CRUSHER someone or something that ruins or dampens one’s pleasure; a killjoy or spoilsport → Amer. students’ sl. 
1992 BUZZKILL a person who dampens enthusiasm or enjoyment; a killjoy → US sl.
1995 WET NOODLE a person who is a hindrance when it comes to having fun → US sl. (Bk.)
1999 BLUE-NOSED WOWSER a killjoy; a teetotaller → Aust. sl. (Bk.)
1999 SAD KECKS a term of contempt for a killjoy → UK sl.