Adulterate implies wrongdoing or unethical behavior, especially in commercial practices. The company faced legal action for adulterating their juices with cheaper ingredients.
Pro Tip 2/3
Harmful Substances
The additives in adulteration are harmful or of lower quality, making the original product less pure. He never buys cheap spices, fearing they may be adulterated with hazardous materials.
Pro Tip 3/3
Not Always Visible
Adulteration may not be immediately obvious by appearance; laboratory tests are often needed. Though the milk looked fresh, it was adulterated with water and powdered milk.