What is the meaning of Question_mark?
The punctuation mark "?", used at the end of a sentence to indicate a question.
A state of doubt or uncertainty.
An enigmatic, inscrutable, or mysterious person or thing; an enigma, a riddle.
Polygonia interrogationis, a North American nymphalid butterfly with a silver mark on the underside of its hindwing resembling a question mark (sense 1).
Final interrogative particle, expressing second-guessing, usually in an exaggerated, rising tone.
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