Baretti: A dictionary of the English and Italian languages
Presúm-ere, Presúm-mere, v. n. (pass. presun-si, Presúm-se,Presúm-sero , part. Presúm-sunto,)
1. to presume, pretend, be proud, to be insolent, to be bold, dare; 2. to presume, imagine, think, conjecture, suppose;s. m. Presúm-itóre, f. Presúm-itríce; adj. Presúm-énte.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
presumere: to presume, to suppose or count himselfe. Also to preuent, to conceiue or take first.