Third-person singular simple present indicative form of chasten.(verb)
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Use "chastens" in a sentence
"She chastens her characters but doesn't judge them."
"Many traders try to capture gains from a stock swing in either direction, and Mr. Lefkowitz said Blue Coat's early report chastens investors who might have been waiting until tomorrow to hedge today's bets."
"While I think Frum is probably right that this movement, much like the Obama "movement", will eventually crest -- it's not clear that losing political battles chastens the right, at least not yet."