adult (adj.) Copy link Outline 1. ădultus2. pūbēs, is, and ĕris3. grandis, e • adult (adj.): 1. ădultus: an a. maiden, ad. virgo, Cic.: a lad of a. age, puer adulta aetate, Cic. 2. pūbēs, is, and ĕris: till a. age, ad p. aetatem, Liv. 3. grandis, e: v. grown up.