What is to cause or permit to become harsh or unkindly. "Souring his cheeks." Shak. Pride had not sour'd nor wrath debased my heart. Harte called?

sour — To cause or permit to become harsh or unkindly. "Souring his cheeks." Shak. Pride had not sour'd nor wrath debased my heart. Harte. (Webster's 1913.)

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