rĕpugnantĭa, ae, f. [repugno]. *
I A resistance , opposition; concr.: (natura) hanc dedit repugnantiam apibus (sc. cuspidem), a means of defence , Plin. 21, 13, 45, § 78.—
II A contradiction , contrariety , incompatibility , repugnance : rerum, Cic. Phil. 2, 8, 19: utilitatis, id. Off. 3, 4, 17: naturae (opp. concordiae), Plin. 22, 23, 49, § 106: repugnantiam inducere, Cic. Off. 3, 7, 34.