perfidiousness

English

Etymology

perfidious +‎ -ness

Noun

perfidiousness (usually uncountable, plural perfidiousnesses)

(rare) Unfaithfulness; deceitfulness; perfidy.
- 1781, Samuel Johnson, "Addison" in Lives of the Poets:
  Not only Cato is vanquished by Caesar, but the treachery and perfidiousness of Syphax prevail over the honest simplicity and the credulity of Juba.

Related terms

References

perfidiousness in An American Dictionary of the English Language, by Noah Webster, 1828.
perfidiousness in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
“perfidiousness” in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.

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