In legal register, a person who commits a minor offence that is less serious than a felony is said to have committed a

Offences are graded into felonies (serious) and misdemeanours (less serious), so the correct term is misdemeanour. A tort is a civil wrong, not a criminal offence, and a verdict is the decision of a court, not an offence at all. 'Felony' contradicts the question, which asks for the less serious category.