Baretti: A dictionary of the English and Italian languages
Turbá-re, v. a.
1. to trouble, disturb, embroil, confound; 2. to disturb, interrupt, disorder, put into disorder; v. r. 1. to be grieved, vexed, disturbed, angry. — di colore o di volto, to change colour or countenance; 2. to grow cloudy, be overcast. Il cielo comincia a —, it grows cloudy or dark; s. m. Turbá-tóre, f. Turbá-tríce;adj. Turbá-nte.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
turbare: to trouble, to molest, to disturbe, to disorder, to confound or make vnquiet.