Etymology of the Latin word nefarius
the Latin word
nefarius (impious; nefarious; execrable; wicked, evil, offending moral law)
derived from the Latin word
nefas (sin, violation of divine law, impious act)
derived from the Latin word
nederived from the Latin word
fas (divine, heaven's law, will)
derived from the Proto-Indo-European root
*dhē-Derivations in other languages
English
nefarious, Italian
nefario, Portuguese
nefário, Spanish
nefario