instinctor, ōris, m. [instinguo],
an instigator (post-Aug.): sceleris, Tac. H. 1, 22: belli, id. ib. 4, 68; Amm. 21, 12; 30, 1.
īnstinctor ōris, m STIG-, an instigator : sceleris, Ta. ...
An Elementary Latin Dictionary