Quickly

wiktionary

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From Middle English quykly, quikliche, quicliche, cwikliche, cwickliche, from Old English cwiculīċe, equivalent to quick +‎ -ly.

etymonline

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quickly (adv.)

mid-15c., quickli, "lively, vivid, lifelike," from quick (adj.) + -ly (2), and compare late Old English cwiculice "vigorously, keenly." Meaning "rapidly, in a short space of time" is from c. 1200.