coorior

   coorior ortus, īrī, dep.    [com-+orior], to come forth, stand up, arise, appear, rise, break forth: ignes pluribus simul locis, L.: bellum in Galliā, Cs.: certamen, O.: seditio coorta, L.—To arise, break out, begin: tanta tempestas coorta est, Cs.: ventis coortis, V.—To rise in opposition, stand up in hostility, rise, break forth: Romani coorti pugnam ediderunt, L.: adeo infensa erat coorta plebs, ut, etc., L.: coortae voces sunt, L.: coorti in pugnam, L.: in agmen, Ta.: ad bellum, L.: adversus alquos, L.

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cooriri, coortus sum V DEP

appear, originate; arise, break out (bad); be born; spring forth/to attack