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nefandous

adjective
ne·​fan·​dous | \ nə̇ˈfandəs\

Definition of nefandous

archaic
: unfit to be spoken of : impious, execrable nefandous wickedness— Increase Mather

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History and Etymology for nefandous

Latin nefandus, from ne- not + fandus, gerundive of fari to speak

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