Definition

1. Adjective:

   • Bitingly sarcastic or caustic: Describes humor, wit, or criticism that is sharply and harshly ironic, often in a way that is critical or cynical.
   • Corrosive or biting in effect: In a technical sense, describes a substance, especially a strong acid, that is capable of corroding or destroying material by chemical action.

2. Noun:

   • A fixing agent in dyeing: A substance, typically a metallic compound, used to treat materials like leather or fabric to set dyes, making them more vibrant and colorfast.

Examples of Usage

• Adjective:

  • The comedian was known for his mordant wit, which left the audience laughing and wincing simultaneously.
  • Her mordant critique of the political system was both brilliant and unsettling.
  • Acids like sulfuric acid have a mordant effect on many metals.

• Noun:

  • Alum is a common mordant used in traditional fabric dyeing to help the color bind to the fibers.
  • Before applying the dye, the wool must be treated with a mordant.

Advanced Usage

• "Mordant satire": A form of satire that is particularly sharp, bitter, and cutting in its criticism of society or human folly.

  • The film is a masterpiece of mordant satire, exposing the absurdities of corporate culture.

• "Mordant irony": A type of irony that is harsh, grim, or sinister in its contrast between expectation and reality.

  • The mordant irony of the situation was not lost on him: he had become the very thing he swore to destroy.

Variants and Related Words

• Mordantly (adverb): In a mordant manner.

  • She commented mordantly on the state of modern art.

• Mordancy (noun): The quality of being mordant; biting sharpness.

  • The mordancy of his prose made him a feared critic.

Synonyms

• Adjective (for wit/criticism): Caustic, acerbic, trenchant, sardonic, biting, sarcastic.
• Adjective (for substance): Corrosive, erosive, corrosive.
• Noun: Fixative, dye fixative.

Related Phrases

• "Mordant humor": A specific type of humor characterized by its grim, cynical, and biting quality.
  • His mordant humor was a defense mechanism against life's disappointments.

Related Idioms

While "mordant" itself is not typically the core of common idioms, it is a defining characteristic of certain types of expression: - To have a tongue dipped in vitriol: This idiom describes someone who speaks with a mordant, caustic sharpness. - Be careful what you say to the editor; she has a tongue dipped in vitriol.

Adjective

1. of a substance, especially a strong acid; capable of destroying or eating away by chemical action
2. harshly ironic or sinister
   • black humor
   • a grim joke
   • grim laughter
   • fun ranging from slapstick clowning ... to savage mordant wit

Noun

1. a substance used to treat leather or other materials before dyeing; aids in dyeing process