/ Dictionary / Index F felonious: Meaning and Definition of Find definitions for: fe•lo•ni•ous Pronunciation: (fu-lō'nē-us), [key] — adj. pertaining to, of the nature of, or involving a felony: felonious homicide; felonious intent. wicked; base; villainous. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: felonious (Thesaurus) felon felonry Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language