vitiation

/ˌvɪʃiˈeɪʃən/
noun
  1. The act or process of spoiling, weakening, or reducing the quality or effectiveness of something.
    • Constant criticism led to the vitiation of the team's morale.
    • The vitiation of the river by industrial waste harmed local wildlife.
    • The vitiation of the data made the experiment useless.
  2. The act of making something legally invalid or void.
    • The vitiation of the treaty occurred when one side broke the terms.
    • The lawyer argued for the vitiation of the contract due to duress.
    • Any vitiation of the agreement must be proven in court.
What does "vitiation" mean? | whatsthatwordmean | whatsthatwordmean