Lewis Short
(adjective) : fētĭālis, e, fetiales
* Of or belonging to the fetiales, fetial: jus, quo bella indicerentur, quod, per se justissime inventum sanxit fetiali religione, ut, etc.,Cic. Rep. 2, 17: jus,id. Off. 1, 11, 36; 3, 29, 108: ceremoniae,Liv. 9, 11, 8: legatus, i. e. the fetial priest, fetialis, id. ib. § 11.
Charlton T. Lewis, Charles Short, A Latin Dictionary