question mark

US /ˈkwes.tʃən ˌmɑːrk/
UK /ˈkwes.tʃən ˌmɑːrk/
"question mark" picture
1.

疑問符

a punctuation mark (?) indicating an interrogative expression or question

:
Always end a direct question with a question mark.
直接的な質問は常に疑問符で終わらせてください。
He wrote a sentence with a missing question mark.
彼は疑問符が抜けている文を書いた。
2.

疑問符, 不確実性, 疑念

a matter of doubt or uncertainty

:
His future with the company is a big question mark.
彼が会社に残るかどうかは大きな疑問符だ。
The success of the new project remains a question mark.
新プロジェクトの成功はまだ疑問符だ。