Place something in proper position; also, repair something. For example, Your tie is lopsided; let me set it right, or The faucets were in backwards but the plumber will soon put them right. [ Second half of 1500s ]
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Correct someone, as in They thought he was married but he quickly set them right.
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Make something accurate or fair, as in He offered to pay for the meal to put things right. Also see set straight