Dictionary

question mark

noun

: the punctuation mark ? that is used after a direct question or to indicate that something (such as a birth date) is uncertain

: someone or something that causes feelings of doubt or uncertainty

Full Definition of QUESTION MARK

1
a :  something unknown, unknowable, or uncertain
b :  someone (as an athlete) whose condition, talent, or potential for success is in doubt
2
:  a mark ? used in writing and printing at the conclusion of a sentence to indicate a direct question

Examples of QUESTION MARK

  1. The team's pitching is a big question mark this season.

First Known Use of QUESTION MARK

1869

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