Lewis & Short

2. artĭo, īre, v. a. [ars], to indue with art; only in the two foll. exs.: artitus: bonis instructus artibus, skilled in arts. Paul. ex Fest. p. 17 Müll. (cf.: centum puer artium, Hor. C. 4, 1, 15).
Hence also endowed with cunning (cf. ars, II. fin.), artful: artiti viri, Plaut. As. 3, 2, 19 in varr. lectt.