What does mad as a hatter mean?

" Mad as a hatter " is a colloquial English phrase used in conversation to suggest (lightheartedly) that a person is suffering from insanity. The etymology of the phrase is uncertain, with explanations both connected and unconnected to the trade of hat-making.

Who is Mad Hatter in Alice in Wonderland?

Lewis Carroll’s 1865 novel “Alice’s Adventures in Wonderland” famously features an eccentric character called the Hatter, who’s referred to in the story as “mad” and became popularly known as the Mad Hatter. However, the phrase “mad as a hatter,” used to describe someone who’s crazy or prone to unpredictable behavior, didn’t originate with Carroll.

What is the etymology of the Hatter?

The etymology of the phrase is uncertain, with explanations both connected and unconnected to the trade of hat-making. The earliest known appearance of the phrase in print is in an 1829 issue of Blackwood's Edinburgh Magazine, predating the Hatter from Lewis Carroll 's Alice's Adventures in Wonderland by several decades.

Why did Carroll say'mad as a hatter'?

The phrase ‘mad as a hatter’ was common in Carroll’s time. ‘Mad as a hatter’ probably owes its origin to the fact that hatters actually did go mad, because the mercury they used sometimes gave them mercury poisoning. Carroll may have asked Tenniel to draw the Mad Hatter to resemble Theophilus Carter, a furniture dealer near Oxford.