mature (adj.) Copy link • mature (adj.): mātūrus (rare in exactly the sense of Eng.): m. in mind (judgment), m. animi, Virg. Aen. 9, 246. (Oftener = ready, quick, prompt.) Phr.. m. years, adulta aetas (v. adult): possessing a m. judgment, *judicii considerati ac bene sani; or simply, consideratus, consideratissimus (v. considerate, sagacious): see also ripe (fig.).