A serious crime, such as murder, rape or burglary, for which there is a stricter sentence given than for a misdemeanor. Felonies are usually categorized by degrees. 1st degree felonies are the most serious class (with the highest fines and penalties), 2nd degree felonies are less serious, and so on. Many states treat DUIs that cause serious bodily injury as a 3rd degree felony. If there has been a death as a result of the DUI, it might be classified as a 1st or 2nd degree felony, depending on the prosecutor and the situation.