Definitions

1. noun

A person who engages in deceitful or fraudulent behavior, especially for personal gain.

“The con artist was a master of humbuggism, swindling people out of their life savings.”

2. noun

The practice of making false or misleading statements in order to deceive or manipulate others.

“The company’s humbuggism was exposed when it was discovered that they had been exaggerating their product’s capabilities.”