foedĭfrăgus, a, um, adj. [2. foedus + frango],
league-breaking , perfidious (very rare): Poeni, Cic. Off. 1, 12, 38; cf. Mos. Cic. Rep. Fragm. 2, p. 513 sq.; so, hostes, Laev. ap. Gell. 19, 7, 6: Chaos, Mart. Cap. 9, § 912.
foedifragus adj. 2 foedus+FRAG-, leaguebreaking, perfidious : Poeni. ...
An Elementary Latin Dictionary