Baretti: A dictionary of the English and Italian languages
Temperá-re, v. a.
1. to temper, qualify. — del ferro, to temper iron, case-harden; 2. to temper, allay, qualify, moderate, abate. — il caldo col freddo, to temper heat by cold. — il vino coll'acqua, to mix, qualify wine with water; 3. to moderate, curb, restrain; 4. to agree; 5. to pacify, appease; 6. to prepare, make. — i veleni, to prepare poisons; 7. to mix, mingle; 8. to regulate, to set. — un oriuolo, to regulate or set a watch, to tune an instrument. — una penna, to make or mend a pen; s. m. Temperá-tóre, f. Temperá-tríce; adj. Temperá-nte.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
temperare: to temper, to moderate. Also to mitigate, to asswage, to allaie or supple.