Lewis Short
(adjective) : in-turbÄdus, a, um
* Pass., undisturbed, quiet (Tacitean): inturbidus externis rebus annus,Tac. A. 3, 52: juventa,id. ib. 14, 22.
* Act., not turbulent: vir sanctus, inturbidus,Tac. H. 3, 39.
Charlton T. Lewis, Charles Short, A Latin Dictionary