Lewis Short
(adjective) : actīvus, a, um, ago.
* Active: philosophia, practical (opp. to contemplativa): philosophia et contemplativa est et activa; spectat simul agitque,Sen. Ep. 95, 10: (opp. to spectativus) thesin a causa sic distinguunt, ut illa sit spectativae partis, haec activae,Quint. 3, 5, 11: (rhetorice) quia maximus ejus usus actu continetur, dicatur activa,id. 2, 18, 5.
* In gramm.: verba activa, which designate transitive action (opp. neutra or intransitiva), Charis. p. 138; Diom. p. 326 P. al.—Adv.: actīve, in gramm., actively, like a verb active, Prisc. pp. 794, 799 P.
Charlton T. Lewis, Charles Short, A Latin Dictionary