rĕbellĭum, ii, n. [rebello],
a renewal of war , revolt , rebellion (a collat. form for rebellio, like consortium for consortio, contagium for contagio, etc.): qui pacatos ad rebellium incitasset, Liv. 42, 21, 3 Gronov. (dub.; Weissenb. rebellandum).
rebellium ī, n rebellis, a revolt , L.dub. ...
An Elementary Latin Dictionary