Definition: to weaken or lower the quality of something
Part of Speech: Verb
Synonym(s): cut, dilute, weaken
Antonym(s): enrich, richen, strengthen
1. If the drink tastes too strong, add water to adulterate it.
2. Drug dealers frequently adulterate cocaine in order to increase the amount of the product.
3. In order to decrease the concentration of the solution, adulterate it with purified water.