Translation guide
A person who tends to see the worst aspect of things or believe that the worst will happen.
Don't be such a pessimist!
Casual, natural way to say 'don't be so pessimistic'.
Describing a person with a generally negative outlook on life or situations.
The most direct translation, meaning 'pessimist' in a philosophical or psychological sense. It's a formal, somewhat academic term.
He is a pessimist and always expects bad outcomes.
Loanword from English, used in casual conversation. Less formal than 悲観主義者.
That person is a real pessimist, huh.
A more common, everyday way to say 'pessimistic person'. 悲観的 means 'pessimistic'.
She's a pessimistic person, so it's better not to expect too much.
Literally 'negative person'. Very common in casual speech to describe someone with a negative mindset.
He's always a negative person, thinking badly of everything.
Referring to a person who adheres to philosophical pessimism, the belief that life has negative value.
A literary or philosophical term for a pessimist, often used in the context of world-weariness or disillusionment.
He was known as a pessimist and preached the emptiness of life.
While 悲観主義者 is correct, it sounds stiff in everyday conversation. Use 悲観的な人 or ネガティブな人 for a more natural tone.
He's a pessimistic person.
ネガティブ is a common loanword meaning 'negative' and can be used to describe a person's personality or temporary state. It's very colloquial.
I've been a bit negative lately.