Understanding the Legal Meaning of “Act” in Arizona Criminal Cases
When facing criminal charges in Arizona, one of the most important elements the prosecution must prove is that a person committed an “act.” Under ARS §13-105, an act is defined as:
A bodily movement.
While this definition seems simple, it plays a critical role in nearly every criminal case.
Why the Definition of “Act” Matters
In Arizona criminal law, a person cannot typically be convicted of a crime without evidence of a voluntary physical action. This means:
- Thoughts alone are not enough to constitute a crime
- There must be a physical movement or conduct
- The act must generally be voluntary
Voluntary vs. Involuntary Acts
Not all movements qualify as criminal “acts.” The law distinguishes between:
- Voluntary acts: Intentional physical actions (e.g., striking someone)
- Involuntary acts: Reflexes, unconscious movements, or actions during medical events
Example:
If a person has a seizure and unintentionally causes harm, that movement may not meet the legal definition of an “act.”
How This Impacts Your Defense
Challenging whether a true “act” occurred can be a powerful defense strategy. If the prosecution cannot prove a voluntary bodily movement, the case may weaken significantly.
At Rideout Law Group, we carefully examine every element of your case—including whether the legal definition of an “act” has been properly met.
📞 Scottsdale Office: (480) 584-3328
📞 Lake Havasu Office: (928) 854-8181
This blog post is for informational purposes only and does not constitute legal advice. Reading this content does not create an attorney-client relationship. For legal guidance specific to your situation, please contact a licensed attorney at Rideout Law Group.

