How Did the Expression “Full of Moxie” Originate For Someone With a Lot of Nerve?

Today Moxie is a New England soft drink, but it began as a tonic invented by Dr. Augustine Thompson in 1884 as “Moxie Nerve Food.”

Although the 1906 Pure Food and Drug Act put an end to its medicinal claims, there are still those who say Moxie gives them energy, and so to be “full of moxie” means to be full of false nerve.