1. makes something impure or of lower quality by adding inferior or harmful substances
Usage: third person singular present tense of adulterate

Examples

• The company adulterates its olive oil with cheaper vegetable oils.
• She discovered that the supplier adulterates the spices with artificial fillers.
• The factory adulterates the paint by mixing in low-grade pigments.
• He adulterates the wine with water to increase his profits.
• The manufacturer adulterates the honey with corn syrup.
• The dealer adulterates the drugs with dangerous cutting agents.