optīvus, a, um, adj. [opto],
chosen (poet. and in post-class. prose): cognomen, Hor. Ep. 2, 2, 101: optivi vocantur hi (tutores) qui ex optione sumuntur, Gai. Inst. 1, 154 (opp. to dativi).
optīvus adj. 2 AP-, chosen : cognomen, assumed , H. ...
An Elementary Latin Dictionary