Open English Wordnet
Nouns
(n)question, interrogation, interrogative, interrogative sentencea sentence of inquiry that asks for a reply“he asked a direct question”, “he had trouble phrasing his interrogations”
(n)interrogative mood, interrogativesome linguists consider interrogative sentences to constitute a mood
Adjectives
(a)interrogativerelating to verbs in the so-called interrogative mood“not all questions have an interrogative construction”