Lewis Short
(adj.adv.) : in-crŭentus, a, um, adj.
* Bloodless, that sheds no blood, without bloodshed (freq. in the histt., but not in Cic. or Caes.): certatum haud incruento proelio foret, ni, etc.,Liv. 2, 56, 15: victoria,Sall. C. 61, 7; Liv. 4, 17, 8; 7, 8 fin.; 21, 29, 4; 7, 8, 7: miles,id. 8, 29, 12: Darium incruentus devicit,id. 9, 17, 16: exercitus,in which no blood has been shed, that has not lost any men,Sall. J. 92, 4; Tac. H. 4, 37: incruentam urbem intrare,without shedding of blood,id. ib. 3, 66; Amm. 14, 10, 14.— Hence, * adv.: incrŭ-entē, without bloodshed: vivere, Prud. στεφ. 10, 1094.
Charlton T. Lewis, Charles Short, A Latin Dictionary