Definify.com

Webster 1913 Edition


Perfidiousness

Per-fid′i-ous-ness

,
Noun.
The quality of being perfidious; perfidy.
Clarendon.

Webster 1828 Edition


Perfidiousness

PERFID'IOUSNESS

,
Noun.
The quality of being perfidious; treachery; traitorousness; breach of faith, of vows or allegiance.