Faustian is an adjective that is used to describe a situation where a person makes a deal with the devil in order to achieve their goals. It is often associated with immoral and unethical behavior. There are many synonyms for the term Faustian such as diabolical, satanic, evil, malevolent, wicked, unscrupulous, and unethical. Other synonyms include Machiavellian, nefarious, scheming, selfish, manipulative, and deceitful. These words all convey the same idea that a person or situation is morally dubious and likely to bring harm to others. The use of these synonyms helps to expand your vocabulary and gives you the flexibility to express yourself in different ways depending on the context.