0 to make food or drink weaker or to lower its quality, by adding something else:
There were complaints that the beer had been adulterated with water.
1 to make something weaker or of worse quality by adding something else to it:
Saffron is very expensive, and is often adulterated with other plants.
NOVÉ SLOVÁ
European
May 10, 2021
SLOVO DŇA
Shimmer
adulterate