The crime of assault varies from state to state (and under federal law), but is generally defined as intentionally putting another person in reasonable apprehension or fear of an imminent (immediate) harmful or offensive contact. The crime of assault may be committed even if there is no physical contact, as the criminal physical contact constitutes the separate crime of battery.

The crime of assault with a deadly weapon (also known as aggravated assault) occurs when someone uses a deadly weapon (gun, knife, club, tire iron, brass knuckles, etc.) during an assault.

In Oklahoma, assault is defined under state law as any willful and unlawful attempt or offer with force or violence to do a corporal injury to another person. This means that an individual can be charged with assault if they intentionally create a reasonable fear of imminent harm in another person, even if no physical contact occurs. The separate offense of battery occurs when there is actual physical contact or harm. Aggravated assault, or assault with a deadly weapon, is a more serious offense in Oklahoma. It involves the use of a deadly weapon, such as a firearm, knife, or any object that could potentially cause death or significant bodily harm, during the commission of an assault. The presence of a deadly weapon elevates the severity of the charge due to the increased potential for serious injury or death. Oklahoma law provides for specific penalties for assault and aggravated assault, which can include fines, imprisonment, or both, depending on the circumstances and severity of the offense.