treacherousness

English

Etymology

treacherous +‎ -ness

Noun

treacherousness (uncountable)

1. Treachery; the characteristic of being treacherous.
   • 1901, Bret Harte, "Under the Eaves", in Under the Redwoods,

     He had an aggressive treacherousness of eye which his potations had not subdued.

References

• treacherousness in An American Dictionary of the English Language, by Noah Webster, 1828.
• “treacherousness”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.