perfidiousness

English

Etymology

From perfidious +‎ -ness.

Noun

perfidiousness (usually uncountable, plural perfidiousnesses)

1. (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

• perfidious
• perfidiously

References

• Noah Webster (1828) “perfidiousness”, in An American Dictionary of the English Language: […], volume II (J–Z), New York, N.Y.: […] S. Converse; printed by Hezekiah Howe […], →OCLC.
• “perfidiousness”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• “perfidiousness”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.