Wet blanket

• Party pooper
• (informal) someone who spoils the pleasure of others

Wikipedia Word definitions in Wikipedia
Killjoy is the second full-length album released by New Zealand band, Shihad . This album was released in May 1995. It is their first album to go gold in New Zealand. It is widely regarded as a classic New Zealand rock album. According to MTV , Iggy Pop ...

WordNet Word definitions in WordNet
n. someone who spoils the pleasure of others [syn: spoilsport , wet blanket , party pooper ]

Wiktionary Word definitions in Wiktionary
n. A person who is anti-fun, or prevents others from having fun

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM OTHER ENTRIES ▪ We wanted to do a sponsored dance after work but those killjoys in Head Office wouldn't let us.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
also kill-joy , 1776, from kill (v.) + joy . Formerly used with other stems (such as kill-courtesy "boorish person," kill-cow "bully, big man," etc.).