Perfidious

adjective · GRE

Meaning: Deceitful and untrustworthy; likely to betray.

Example

In the novel, the perfidious advisor secretly sells the king's plans to his rivals.

Synonyms:

treacherousdisloyalfaithless

Which choice best matches the meaning of “perfidious”?

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to speak evasively or misleadingly in order to avoid telling the whole truth

little known

false or fake

very weak or slight

deserving great respect because of age, wisdom, or long service

brisk and cheerful readiness

showing constant, careful attention and hard work

a harsh, discordant mixture of sounds