Humanly

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late Middle English humaine, from Old French humain(e ), from Latin humanus, from homo ‘man, human being’. The present spelling became usual in the 18th century; compare with humane.

wiktionary

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human +‎  -ly

etymonline

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humanly (adv.)

c. 1500, "humanely, courteously, kindly," from human (adj.) + -ly (2). Meaning "in a human manner" is from 1610s; meaning "within the range of human experience or power" is from 1580s.