One of the mysteries of the English language finally explained.
A dialogue or session consisting of alternating questions and answers.
Consisting of or characterized by questions and answers.
Early 19th century; earliest use found in John Keats (1795–1821), poet. From question + and + answer.
question and answer/ˌkwɛstʃ(ə)n(ə)n(d)ˈansə//ˌkwɛstʃ(ə)nˌ(ə)n(d)ˈɑːnsə/
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