Deadly Force

Also known as: Lethal Force

In one sentence

Physical force intended or likely to cause death or serious bodily injury.

Plain English

Deadly force refers to any action that can reasonably be expected to kill or seriously injure someone. This includes using weapons like guns or knives, or physical actions like striking someone in the head. The law permits deadly force only in narrow circumstances, such as self-defense against an immediate threat of death or serious harm.

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Example

A homeowner shot an intruder who was attacking them with a knife. The homeowner claimed they used deadly force in self-defense because they reasonably believed the intruder would cause them serious injury or death.

Used in a sentence

“Police officers are trained on when deadly force is legally justified to protect themselves or others.”

Related terms

battery

Intentional physical contact with another person without consent.

breaking and entering

Unlawfully entering a building or dwelling with intent to commit a crime.

criminal intent

The mental state or purpose required to commit a crime.

culpable mental state

The defendant's guilty mind or criminal intent required to establish liability for a crime.

Beyond a Reasonable Doubt

The highest standard of proof required to convict a defendant in a criminal trial.

Stand Your Ground

A law allowing a person to use force, including deadly force, to defend themselves without a duty to retreat.

Castle Doctrine

A law stating that a person's home is their castle and they can use force to defend it without duty to retreat.

Expungement

A legal process that erases or seals a criminal conviction from your record.

This page is a plain-English reference and is not legal advice. Laws vary by jurisdiction and change over time. For specific situations consult a licensed attorney.