Английский Этимологический словарь - mature (v.)

- 1392, from L. maturare "to ripen," from maturus "ripe, timely, early." The financial sense is from 1861. The adj. is first recorded 1454, from the noun. Maturity (late M.E.) is from L. maturitatem (nom. maturitas) "ripeness," from maturus "ripe."