Grinch

 
Pronunciation: /grɪntʃ/

noun

North American informal
  • a spoilsport or killjoy: it’s hard not to feel like a bit of a Grinch criticizing the importance of 'zine culture

Origin:

1970s: the name of a character in the children's story How the Grinch Stole Christmas (1957) by Dr Seuss