A person who habitually sees the worst aspect of things or believes that the worst will happen. Often contrasted with 楽観主義者 (optimist).
See also: 悲観論者
He is a pessimist and always expects bad outcomes.
A pessimist and an optimist see the same situation differently.
Means 'optimist', the opposite of 悲観主義者.
Also means 'pessimist', but 悲観主義者 emphasizes a philosophical stance, while 悲観論者 can refer to someone who argues a pessimistic view.
Compound of 悲観 (pessimism) + 主義 (doctrine, -ism) + 者 (person). The term 悲観主義 is a Meiji-era calque of Western 'pessimism'.