pessimist
nounUK /ˈpes.ɪ.mɪst/
US /ˈpes.ə.mɪst/
A pessimist is someone who thinks bad things will happen.
My brother is a pessimist who always says it will rain on our picnic.
RELATED WORDS
OTHER MEANINGS
2. A person who expects the worst possible outcome in any situation.
As a pessimist, she packed an umbrella even on sunny days.
3. Someone who believes that the world is generally bad or getting worse.
The old pessimist grumbled that nothing good ever lasts.
4. A thinker or writer who emphasizes the negative side of life.
The philosopher was known as a pessimist who doubted human progress.