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Synonyms
treachery
falseness
disloyalty
false-heartedness
treacherousness
unfaithfulness
traitorousness
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perfidiousness
- 1 dictionary result
per⋅fid⋅i⋅ous
/
pərˈfɪd
i
əs
/
Show Spelled Pronunciation
[
per-
fid
-ee-
uh
s
]
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perfidiousness
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perfidiousness
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perfidiousness
–adjective
deliberately faithless; treacherous; deceitful:
a perfidious lover.
Origin:
1590–1600;
< L
perfidiōsus
faithless, dishonest.
See
perfidy
,
-ous
Related forms:
per⋅fid⋅i⋅ous⋅ly,
adverb
per⋅fid⋅i⋅ous⋅ness,
noun
Synonyms:
false, disloyal; unfaithful, traitorous.
Antonyms:
faithful.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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