List of 426 Sets of Synonyms - How they Differ - Total of 2307 Words - 153

SYNONYMS: faithless, unfaithful, false, disloyal, traitorous, treacherous, perfidious.
These adjectives mean not true to duty or obligation.

Faithless and unfaithful are approximately interchangeable and imply failure to adhere to promises, obligations, or allegiances: has never been faithless to her ideals; an unfaithful spouse.
False emphasizes a tendency to be faithless or deceitful: a false friend.
One who is disloyal i s false to persons or things that are due allegiance: Disloyal staff members exposed the senator's indiscretions to the press.
Traitorous most commonly refers to disloyalty to a government or nation: a lying, traitorous insurrectionist.
Treacherous suggests a propensity for betraying trust or faith: She gave the treacherous impulse time to subside.
Perfidious applies to what is abominably treacherous; it suggests vileness of behavior and often deceitfulness: a victim of a perfidious murder.