PUNIC

punic, perfidious, treacherous

(adjective) tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans; “Punic faith”; “the perfidious Judas”; “the fiercest and most treacherous of foes”; “treacherous intrigues”

Carthaginian, Punic

(adjective) of or relating to or characteristic of ancient Carthage or its people or their language; “the Punic Wars”; “Carthaginian peace”

Punic

(noun) the Phoenician dialect of ancient Carthage

Source: WordNet® 3.1

Pu"nic, a. Etym: [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.

Source: Webster’s Unabridged Dictionary 1913 Edition