(Latin: to encourage, to urge strongly)
2. To urge to abstain or to refrain from doing something: "The business adviser was dehorting his clients not to invest so much money in one particular business, but to diversify into other areas for their financial safety."
The fitness trainer continuously exhorts his elderly clients to eat properly and to exercise at least four or five times a week so they can extend their lives in good physical condition.
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"The mother's exhortation to her son to quit making so much noise didn't have much influence on his behavior."