mordant

/ˈmɔrdənt/
adjective
  1. Sharp, critical, or sarcastic in a way that is clever and often funny.
    • The cartoonist's mordant humor often targets political hypocrisy.
    • He gave a mordant review of the restaurant, calling the food 'edible but forgettable.'
    • The columnist is known for her mordant wit and fearless opinions.
Antonyms
noun
  1. A substance used in dyeing to fix colors to fabric or other materials.
    • Without a mordant, the natural dye would quickly wash out of the cotton.
    • Alum is a common mordant used in traditional fabric dyeing.
    • The dyer added a mordant to make the blue color last longer on the wool.
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