Definition

Adverb: - In a manner that is not faithful; disloyally; treacherously. It describes an action done with a lack of fidelity, trustworthiness, or allegiance.

Usage

The adverb "faithlessly" is used to modify a verb, describing how an action is performed. It specifically indicates that the action was done with betrayal, deceit, or a breach of trust. - It is a formal and somewhat literary word. - It often describes actions related to personal relationships, vows, or duties.

Examples

• The ambassador acted faithlessly by sharing state secrets with a rival nation.
• She felt her friend had spoken faithlessly about her private struggles.
• He had sworn an oath to the king, but governed faithlessly for his own gain.

Advanced Usage

• "to play someone false": This is a set phrase meaning to betray or deceive someone. "Faithlessly" is a synonym for the adverb "false" in this context.
  • His wife played him faithlessly. (This is a more formal or explicit way of saying "His wife played him false.")

Variants and Related Words

• Faithless (adjective): Lacking faith or loyalty; disloyal.
  • He was a faithless ally.
• Faithlessness (noun): The quality or state of being faithless.
  • She could not forgive his faithlessness.

Synonyms

• Treacherously: In a deliberately traitorous or deceitful way.
• Disloyally: In a manner not loyal to a person, country, or idea.
• Perfidiously (formal): In a manner involving a breach of trust or faith.
• Falsely: In a deceitful or untruthful manner.

Antonyms

• Faithfully: In a loyal and steadfast manner.
• Loyally: With firm and constant allegiance.
• Devotedly: With great love, loyalty, or dedication.

Related Phrases and Idioms

• To play false: To betray or be disloyal to someone. (This idiom directly relates to the meaning of "faithlessly").
  • He discovered his business partner had played him false.

Adverb

1. in a disloyal and faithless manner
   • he behaved treacherously
   • his wife played him false