perfidious

1. 1.

   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”

   Synonymspunictreacherous

   Similarunfaithful

Questions about perfidious

What does perfidious mean?

perfidious means "tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans".

How many syllables are in perfidious?

perfidious has 4 syllables: per-fi-di-ous. The stress falls on "di".

What is another word for perfidious?

Close synonyms include punic, treacherous. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is perfidious a common word?

perfidious is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.