felonious

adjective

fe·​lo·​ni·​ous fə-ˈlō-nē-əs 

1

archaic : very evil : villainous

2

: of, relating to, or having the nature of a felony

felonious assault

feloniously adverb

feloniousness noun

Synonyms of felonious

• criminal
• unlawful
• illegal
• illicit
• wrongful

Examples of felonious in a Sentence

the commission found that while the senator's actions were ethically questionable, they were not felonious

Recent Examples on the Web

The two were sentenced in Michigan to one year of probation in December 2025, and pleaded guilty to felonious telecommunications fraud in Ohio in 2022. — Joseph Konig, PEOPLE, 15 Sep. 2026

Exton was also convicted of two counts of felonious assault, with sentencing enhancements linked to all three charges, the prosecutor’s office said. — Tim Stelloh, NBC news, 9 Sep. 2026

Her husband was arrested that day and faces 10 counts of felonious criminal abuse charges. — Jane Park, Cincinnati Enquirer, 24 Aug. 2026

Zachary Robert Stacer, 22, was arrested on July 30 and charged with two counts of assault with intent to do great bodily harm, three counts of felonious assault and five counts of resisting and obstructing a police officer. — Joseph Buczek, CBS News, 1 Aug. 2026

Word History

First Known Use

1567, in the meaning defined at sense 1

Rhymes for felonious

• erroneous
• harmonious
• peroneus
• polonius
• acrimonious
• ceremonious
• inharmonious
• parsimonious
• sanctimonious
• unceremonious

Legal Definition

felonious

adjective

fe·​lo·​ni·​ous fə-ˈlō-nē-əs 

: of, relating to, or constituting a felony

felonious sale of cocaine

feloniously adverb