Definition and Nature of Humbug

The book explores the nuanced distinction between humbug (showy, attention-grabbing but not necessarily harmful deception) and outright crimes like swindling, forgery, or theft, arguing that humbug often involves exaggerated claims or theatricality rather than malicious fraud.

The publisher distinguishes between a narrow sense in which Barnum is a 'humbug' and a larger sense in which he is not, echoing Barnum's own elaboration in the book.

The chapter defines the subject matter as encompassing humbugs, delusions, impositions, quackeries, and deceits.

Barnum defines humbug as a form of deception that is often playful or exaggerated, distinct from outright fraud.

Barnum provides his own definition of humbug as showmanship and attention-grabbing without deceit, contrasting it with swindling and imposture.