Baretti: A dictionary of the English and Italian languages
Scemá-re, v. a. to diminish, lessen, cut off, reduce. — l'amore, to cool one's love; v. n. to diminish, lessen. — di riputazione, to fall or sink in one's reputation; s. m. Scemá-tóre, f. Scemá-tríce;adj. Scemá-nte.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
scemare: to diminish, to abate, to lessen, to defalke. Also to decrease or wane as the Moone.