mad hatter
mad hatter · mad hatters
A lunatic; a highly eccentric personA lunatic; a highly eccentric person.
» She's as mad as a hatter.
Dejo · Tatoeba · CC BY 2.0 FRMeaning
1 sensesA lunatic; a highly eccentric person.
Examples
2 sentencesShe's as mad as a hatter.
Tom is madder than a hatter.
Origin
The term is attested since at least the 1790s, and a Mad Hatter character appears in LewisThe 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.
Wiktionary, CC BY-SA 4.0 · source
Forms
plural: mad hatters| Singular | mad hatter |
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| Plural | mad hatters |
regular