Respond
来自Big Physics
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late Middle English (as a noun): from Old French, from respondre ‘to answer’, from Latin respondere, from re- ‘again’ + spondere ‘to pledge’. The verb dates from the mid 16th century.
wiktionary
From Middle English respounden, from Old French respondre (Modern répondre), from Latin respondeō.
etymonline
respond (v.)
"make answer, give a reply in words," c. 1300, respounden, from Anglo-French respundre, Old French respondere "respond, correspond" and directly from Latin respondere "respond, answer to, promise in return," from re- "back" (see re-) + spondere "to pledge" (see sponsor (n.)). Modern spelling and pronunciation is from c. 1600. From 17c. also "make a liturgical response." Related: Responded; responding.
