Webster’s Revised Unabridged Dictionary · 1913
Punic
Pu′nic (pū′nĭk), a. [L. Punicus pertaining to Carthage, or its inhabitants, fr. Poeni the Carthaginians.]
1. Of or pertaining to the ancient Carthaginians.
2. Characteristic of the ancient Carthaginians; faithless; treacherous; as, Punic faith.
Yes, yes, his faith attesting nations own; 'T is Punic all, and to a proverb known. H. Brooke.