Eeyorish

 
Pronunciation: /ˈiːɔːrɪʃ/
(also Eeyoreish)

adjective

British
  • pessimistic or gloomy: they were an Eeyorish bunch, always looking on the dark side of life

Origin:

1990s: from Eeyore, the name of a donkey in A. A. Milne's Winnie-the-Pooh (1926), characterized by his gloomy outlook on life