pollute; corrupt, debase, or make impure by adding a foreign or inferior substance
The company faced charges for attempting to adulterate their product with cheap fillers.
Vocabulary like adulterate appears on the Digital SAT in Words-in-Context questions, where you choose the word that fits a passage's meaning and tone. You can also drill this word with vocabulary flashcards.
highly skilled or proficient
enough; having the requisite qualities or resources to meet a task
next to; nearest in space or position
alter; alter or regulate so as to achieve accuracy or conform to a standard
manage; work in an administrative capacity; supervise or be in charge of
warn; admonish or counsel in terms of someone's behavior
highly skillful
praise; servile flattery; exaggerated and hypocritical praise