Baretti: A dictionary of the English and Italian languages
Chiaríre, v. n.
1. to grow or become clear, clear up; 2. to become limpid, clarified; v. a. 1. to clear up, render clear, intelligible; 2. to declare, make known; v. r. to satisfy one's self of a fact.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
chiarire: to cleare, to clarifie. Also to resolue or put out of doubt.