Ought
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From Middle English oughte, aughte, aȝte, ahte, from Old English āhte, first and third person singular past tense of Old English āgan (“to own, possess”), equivalent to owe + -t.
Cognate with Sanskrit ईश्वर (īśvará, “capable of, liable”).
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The root rā wāw dāl (ر و د)