Knavishnesses are a set of negative traits that are associated with deceit, trickery, and dishonesty. Some synonyms for the word knavishnesses include cunningness, slyness, fraudulence, duplicity, deception, and chicanery. These words are often used to describe people who are untrustworthy and manipulative. Other synonyms for knavishnesses include dishonesty, shadiness, and double-dealing. These words are often used in legal settings to describe fraudulent behavior. Synonyms for knavishnesses also include malfeasance, misdeed, and impropriety. These words are often used in business settings to describe unethical behavior, such as fraud or embezzlement. Overall, synonyms for knavishnesses reflect a range of negative traits associated with deceit and dishonesty.