What is the Latin word for sinful?

The usual Latin words for “sinful” are impius, improbus, flāgitiōsus. The right choice depends on the sense; see the distinctions below.

English → Latin

“sinful” in Latin

impiusdisloyal, undutiful; godless, impious, unpatriotic; damned, accursed improbusexcessive, immoderate, flagrant, impudent; greedy, wanton, ravenous; wicked, bad, villainous, immoral, impious, maliciou flāgitiōsusshameful, disgraceful, scandalous; profligate, dissolute

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

sinful

pravis cupiditatibus deditus (of persons): impius (in deos; of persons): improbus: flagitiosus (of persons or things). To regard a thing as sinful, nefas esse ducere.

Quick answer

What is the Latin word for sinful?: The usual Latin words for “sinful” are impius, improbus, flāgitiōsus. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.