I. adjective
EXAMPLES FROM CORPUS
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Convincing confirmation of this analysis is provided by the interrogative adverbs how and why in their use with the infinitive.
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In negative and interrogative contexts, on the other hand, the event's taking place in time is denied or questioned.
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No sign of grammar here: no interrogative forms, modal verbs, question tags; no sentence at all.
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She tipped her head towards the right-hand passage and lifted an interrogative eyebrow.
II. noun
EXAMPLES FROM CORPUS
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So if imperatives and interrogatives express wishes and wonderings it is in a somewhat different sense. 3.