Word.ws English Dictionary

mattoid

mattoid adjective: displaying erratic behaviour.

Adjective

mattoid (comparative more mattoid, superlative most mattoid)

  1. Displaying erratic behaviour

Noun

mattoid (plural mattoids)

  1. A person who displays such behaviour; a person of congenitally abnormal mind bordering on insanity or degeneracy.

Forms of mattoid

Adjective
comparativemore mattoid
superlativemost mattoid
Noun
pluralmattoids

Origin of mattoid

From Italian matto (“insane”) + -oid (“likeness or resemblance”), from Ancient Greek εἶδος (eîdos, “form”) more First appeared in English in 1891 through a translation of the nineteenth-century Italian criminologist Cesare Lombroso's work, Man of Genius. H G Wells used it in several of his books, most notably in Mankind in the Making of 1903, in which he derides the theories of Lombroso and the Victorian phrenologists: “Among such theorists none at present are in quite such urgent need of polemical suppression as those who would persuade the heedless general reader that every social failure is necessarily a ‘degenerate’, and who claim boldly that they can trace a distinctly evil and mischievous strain in that unfortunate miscellany which constitutes ‘the criminal class’... These mattoid scientists make a direct and disastrous attack upon the latent self-respect of criminals.”

Questions about mattoid

What does mattoid mean?
Mattoid means displaying erratic behaviour.
What part of speech is mattoid?
Mattoid can be an adjective or a noun.

Words near mattoid in the dictionary

  1. mattock
  2. mattocked
  3. mattocking
  4. mattocks
  5. Mattockses
  6. mattoid
  7. mattoids
  8. mattoir
  9. mattoirs
  10. Mattole
  11. Mattoon

Source and license

Adapted from Wiktionary: mattoid (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “mattoid.” Word.ws, https://word.ws/mattoid. Based on Wiktionary, CC BY-SA 4.0.