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Definition of perfidious adjective from the Oxford Advanced Learner's Dictionary

perfidious

adjective
 
/pəˈfɪdiəs/
 
/pərˈfɪdiəs/
(literary)
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  1. that cannot be trusted synonym treacherous
    Word Originlate 16th cent.: from Latin perfidiosus, from perfidia ‘treachery’.
See perfidious in the Oxford Advanced American Dictionary
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Nearby words

indeed
adverb
 
 
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