Definition

Noun: - A wrongful act or omission that constitutes the physical component of a crime: In legal contexts, "actus reus" refers to the actual physical act (or unlawful omission) that, when combined with the required mental state ("mens rea"), constitutes a criminal offense. It is the external, observable element of a crime.

Usage

• The term "actus reus" is used specifically in criminal law to describe the physical conduct or result that is prohibited by law. It must be proven by the prosecution to establish that a crime has occurred.
• It is often paired with "mens rea" (the guilty mind or intent) to describe the two fundamental components of criminal liability.

Examples

• Noun:
  • The prosecution must prove both the actus reus and the mens rea beyond a reasonable doubt.
  • Simply having criminal thoughts is not enough; there must be an actus reus—an actual criminal act or a failure to act where there is a legal duty.

Advanced Usage

• "Actus reus" vs. "Mens rea": This is the classic legal pairing. "Actus reus" is the "guilty act," while "mens rea" is the "guilty mind." Both are generally required for criminal liability.

  • The defense argued that while the actus reus was present, their client lacked the necessary mens rea for the crime of theft.

• "Actus reus" of omission: In some cases, the "actus reus" can be a failure to act (an omission) when there is a legal duty to act.

  • A parent's failure to feed their child can constitute the actus reus for the crime of neglect.

Variants and Related Words

• Conduct (n): The behavior of an individual, which can form the basis of an "actus reus."
• Omission (n): A failure to act, which can serve as the "actus reus" when there is a legal duty to act.
• Mens rea (n): The mental element or intention accompanying the "actus reus," necessary for most crimes.

Synonyms

• Wrongful deed: An act that is illegal or unjust.
• Unlawful act: An action that violates the law.
• Criminal act: An act that is defined as a crime by statute.

Related Phrases

• Elements of a crime: The component parts, including "actus reus" and "mens rea," that must be proven for a criminal conviction.
• Corpus delicti: The body of the crime; the facts proving that a crime has been committed, which includes the "actus reus."

Notes

• "Actus reus" is a Latin term that is standard in English legal terminology. It is typically used in formal, academic, or professional legal contexts.
• The concept is fundamental to criminal law systems derived from English common law.

Noun

1. activity that transgresses moral or civil law
   • he denied any wrongdoing