Interrogative
/ˌɪn.təˈɹɒ.ɡə.tɪv/
noun
(grammar) A word (pronoun, pronominal adjective, or adverb) implying interrogation, or used for asking a question: why, who, when, etc.
A question; an interrogation.
Synonyms: question mark
adjective
(grammar) Asking or denoting a question: as, an interrogative phrase, pronoun, or point.
Pertaining to inquiry; questioning
“He took on an interrogative tone of voice.”
Synonyms: examining, inquiring, investigative
noun
The punctuation mark "?", used at the end of a sentence to indicate a question.
A state of doubt or uncertainty.
“There’s a question mark over whether or not he’ll be fit for the next game.”
An enigmatic, inscrutable, or mysterious person or thing; an enigma, a riddle.
Synonyms: eroteme, interrogation mark, interrogation point, interrogative, interrogative-point, mystery, puzzle