Words that have the same consonants in the same order are consonyms. For example, 'rues', 'ruse', 'rosy', and 'areas' are consonyms.

As far as I can find, this word is only used by those who like word games -- the search for consonyms can kill hours of time. You may make a distinction between 'normal' consonyms and mixed consonyms. Mixed consonyms have the same consonants in the same order, but in different groupings, for example, ethnic and thence.

The longest consonyms that I have been able to find are:

Common words:

  • Incontrovertible and Incontrovertibly (16 letters)
  • Incomprehensible and Incomprehensibly (16 letters)
Uncommon words:
  • Diphenylaminechlorarsine and Diphenylaminechloroarsine (24 letters)
  • Electroencephalographs and Electroencephalographies (24 letters)
  • Microspectrophotometres and Microspectrophotometries (24 letters)
  • Stereophotomicrographs and Stereophotomicrographies (24 letters)

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