ADULTERATION
adulteration
(noun) the act of adulterating (especially the illicit substitution of one substance for another)
adulteration, debasement
(noun) being mixed with extraneous material; the product of adulterating
Source: WordNet® 3.1
Noun
adulteration (plural adulterations)
The action of adulterating, being mixed with extraneous material, illicit substitution of one substance for another.
Antonyms
• purification
Source: Wiktionary
A*dul`ter*a"tion, n. Etym: [L. adulteratio.]
1. The act of adulterating; corruption, or debasement (esp. of food
or drink) by foreign mixture.
The shameless adulteration of the coin. Prescott.
2. An adulterated state or product.
Source: Webster’s Unabridged Dictionary 1913 Edition