Meanings
Synonyms & antonyms
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Origin
The term is attested since at least the 1790s, and a Mad Hatter character appears in Lewis Carroll's Alice's Adventures in Wonderland. See mad as a hatter.
Full word history & related roots →Cite this entry
APA
mad hatter. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/mad%20hatter
MLA
“mad hatter.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mad%20hatter. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “mad hatter,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/mad%20hatter.
Source: mad hatter on Wiktionary, CC BY-SA 4.0.