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

Asia has been charged with six counts of murder, four counts of felonious assault and one count of tampering with evidence, according to online court records obtained by PEOPLE. — Samira Asma-Sadeque, PEOPLE, 30 Oct. 2026

Jones did not enter a plea on Thursday to multiple counts of murder, felonious assault and tampering with evidence. — ABC News, 29 Oct. 2026

Joshua Shakur Leroy Cawthon, 18, was charged with one count of first-degree animal killing or torturing, one count of felonious assault, and one count of domestic violence. — Karma Sabbah, CBS News, 15 Oct. 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

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