Translation guide
The English word 'scepticism' can refer to a general attitude of doubt or questioning, or to a specific philosophical stance. In Japanese, different words and phrases are used depending on the context.
Expressing a skeptical attitude toward a claim, idea, or person
The most direct translation for 'scepticism' as a general concept of doubt. Often used in formal or written contexts.
彼の説明には懐疑の念を抱いた。
I felt scepticism about his explanation.
A more common, everyday word for 'doubt' or 'suspicion'. Can be used in casual conversation.
その話には疑いがある。
I have my doubts about that story.
A set phrase meaning 'half in doubt, half believing', i.e., sceptical but not entirely dismissive.
彼の成功を半信半疑で聞いた。
I listened to his success story with scepticism.
A common way to say 'I'm sceptical about...' or 'I find it doubtful'. More conversational.
その計画は疑わしいと思う。
I'm sceptical about that plan.
Referring to the philosophical doctrine that true knowledge is impossible
The standard term for philosophical scepticism. Used in academic contexts.
彼は懐疑主義の哲学者だ。
He is a philosopher of scepticism.
Literally 'sceptical theory', often used interchangeably with 懐疑主義 in philosophical discourse.
Describing someone who is habitually sceptical
An adjective meaning 'sceptical by nature' or 'distrustful'. Used to describe a person's character.
彼は疑り深い性格だ。
He has a sceptical nature.
A na-adjective meaning 'sceptical'. Can describe a person or attitude. More formal than 疑り深い.
懐疑 (かいぎ) is more abstract and formal, often used in written or intellectual contexts. 疑い (うたがい) is a general term for doubt or suspicion and is common in everyday speech.
Using 懐疑主義 in casual conversation may sound overly academic. Instead, use phrases like 疑わしいと思う or 半信半疑 to express scepticism naturally.
懐疑論は知識の可能性を問う。
Scepticism questions the possibility of knowledge.
彼女はその提案に懐疑的だった。
She was sceptical about the proposal.