Definitions of felonious

1. Feloniously.

2. involving or being or having the nature of a crime; " a criminal offense"; " criminal abuse"; " felonious intent"

3. Malignant; malicious; indicating or proceeding from a depraved heart or evil purpose; villanous; traitorous; perfidious; as, a felonious deed; in law, done with the deliberate purpose to commit a crime; as, felonious homicide.

4. Showing criminal purpose.

5. Wicked; worthy of a felon; done with the deliberate purpose to commit a crime.

6. Done with intention to commit crime; malignant.