Eeyorish
adjective
[ ˈiːɔːrɪʃ ]
• 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.