Vitiate

Pronunciation: /ˈviːʃɪˌeɪt/

Vitiate (verb)

  1. To spoil something so it becomes less effective, less correct, or less acceptable.
  2. To weaken or damage a rule, decision, or result so it cannot be trusted or accepted.
  3. To gradually ruin a person’s character or behaviour, often by bad influence.

Examples

  • Too much heat can vitiate the quality of the paint.
  • Poor storage may vitiate the quality of the food.