Adversity

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Middle English: from Old French adversite, from Latin adversitas, from advertere ‘turn towards’.

wiktionary

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From Old French adversité, from Latin adversitātem, the accusative singular of adversitās, from adversus, the perfect passive participle of advertō(“I turn toward”).

etymonline

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adversity (n.)

c. 1200, aduersite "condition of misfortune, hardship, difficulty, distress," from Old French adversite, aversite (Modern French aversité) "adversity, calamity, misfortune; hostility, wickedness, malice" (Modern French adversité), from Latin adversitatem (nominative adversitas) "opposition," from adversus "turned against, hostile" (see adverse).