Perfidious: alternatives and connections

Begin with the reviewed alternatives, then explore broader connections without treating every related word as an automatic substitute.

Try an example: important law show help change happy

26,102 words currently have published synonym-style alternatives

90,593 searchable synonym connections

350,924 published thesaurus relationships of every type

Start with the meaning

Perfidious

Guilty of perfidy; violating good faith or vows; false to trust or confidence reposed; teacherous; faithless; as, a perfidious friend.

View the full dictionary entry Compare this word with another →

43 useful connections shown 4 reviewed relationships and 39 broader connections.

Best place to begin

Reviewed alternatives and contrasts

These links were deliberately created. Use the interchangeability score and guidance to judge whether a word will work in your sentence.

Similar meaning 2

Unfaithful 84% connected

Not faithful; not observant of promises, vows, allegiance, or duty; violating trust or confidence; treacherous; perfidious; as, an unfaithful subject…

oewn 2023 50% interchangeable

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Definition Compare both words

Unfaithful 84% connected

Not faithful; not observant of promises, vows, allegiance, or duty; violating trust or confidence; treacherous; perfidious; as, an unfaithful subject…

oewn 2023 50% interchangeable

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Definition Compare both words

Synonym 2

Punic 92% connected

Of or pertaining to the ancient Carthaginians.

oewn 2023 68% interchangeable

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

Definition Compare both words

Treacherous 92% connected

Like a traitor; involving treachery; violating allegiance or faith pledged; traitorous to the state or sovereign; perfidious in private life; betrayi…

oewn 2023 68% interchangeable

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

Definition Compare both words

Explore further

Words connected by meaning

Their definitions overlap or refer to similar ideas. Use these to widen your search, then compare the exact meanings.

All dictionary tools

Explore Academic Dictionary

The same nine destinations available from the header menu are shown here as a clear, fully visible grid.