SuaviloquyToday’s word

felonious

Felonious, a.

Having the quality of felony; malignant; malicious; villainous; traitorous; perfidious; in a legal sense, done with intent to commit a crime; as, felonious homicide. O thievish Night, Why should'st thou, but for some felonious end, In thy dark lantern thus close up the stars Milton. -- Fe*lo"ni`ous*ly, adv. -- Fe*lo"ni`ous*ness, n.

Shades of meaning

Fernald has no entry of its own for felonious; he lists it under criminal.

Where he writes about it:

A felonious act is a criminal act of an aggravated kind, which is punishable by imprisonment in the penitentiary or by death. — from criminal

Synonyms

criminalabominableculpableflagitiousguiltyillegalimmoraliniquitousnefarioussinfulunlawfulviciousvilewickedwrong

Antonyms

innocentjustlawfullegalmeritoriousmoralrightvirtuous

etymologyWebster’s online