(a) The use of physical force upon another person which would otherwise constitute an offense is justifiable and not criminal under any of the following circumstances:

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Terms Used In Connecticut General Statutes 53a-18

  • another: may extend and be applied to communities, companies, corporations, public or private, limited liability companies, societies and associations. See Connecticut General Statutes 1-1
  • Dangerous instrument: means any instrument, article or substance which, under the circumstances in which it is used or attempted or threatened to be used, is capable of causing death or serious physical injury, and includes a "vehicle" as that term is defined in this section and includes a dog that has been commanded to attack, except a dog owned by a law enforcement agency of the state or any political subdivision thereof or of the federal government when such dog is in the performance of its duties under the direct supervision, care and control of an assigned law enforcement officer. See Connecticut General Statutes 53a-3
  • Deadly physical force: means physical force which can be reasonably expected to cause death or serious physical injury. See Connecticut General Statutes 53a-3
  • Defendant: In a civil suit, the person complained against; in a criminal case, the person accused of the crime.
  • Discovery: Lawyers' examination, before trial, of facts and documents in possession of the opponents to help the lawyers prepare for trial.
  • Guardian: A person legally empowered and charged with the duty of taking care of and managing the property of another person who because of age, intellect, or health, is incapable of managing his (her) own affairs.
  • Person: means a human being, and, where appropriate, a public or private corporation, a limited liability company, an unincorporated association, a partnership, a government or a governmental instrumentality. See Connecticut General Statutes 53a-3
  • Physical injury: means impairment of physical condition or pain. See Connecticut General Statutes 53a-3
  • Serious physical injury: means physical injury which creates a substantial risk of death, or which causes serious disfigurement, serious impairment of health or serious loss or impairment of the function of any bodily organ. See Connecticut General Statutes 53a-3

(1) A parent, guardian or other person entrusted with the care and supervision of a minor or an incompetent person, except a person entrusted with the care and supervision of a minor for school purposes as described in subdivision (6) of this section, may use reasonable physical force upon such minor or incompetent person when and to the extent that he or she reasonably believes such to be necessary to maintain discipline or to promote the welfare of such minor or incompetent person.

(2) An authorized official of a correctional institution or facility may, in order to maintain order and discipline, use such physical force as is reasonable and authorized by the rules and regulations of the Department of Correction.

(3) A person responsible for the maintenance of order in a common carrier of passengers, or a person acting under his or her direction, may use reasonable physical force when and to the extent that he or she reasonably believes such to be necessary to maintain order, but he or she may use deadly physical force only when he or she reasonably believes such to be necessary to prevent death or serious physical injury.

(4) A person acting under a reasonable belief that another person is about to commit suicide or to inflict serious physical injury upon himself or herself may use reasonable physical force upon such person to the extent that he or she reasonably believes such to be necessary to thwart such result.

(5) A duly licensed physician or psychologist, or a person acting under his or her direction, may use reasonable physical force for the purpose of administering a recognized form of treatment which he or she reasonably believes to be adapted to promoting the physical or mental health of the patient, provided the treatment (A) is administered with the consent of the patient or, if the patient is a minor or an incompetent person, with the consent of his or her parent, guardian or other person entrusted with his or her care and supervision, or (B) is administered in an emergency when the physician or psychologist reasonably believes that no one competent to consent can be consulted and that a reasonable person, wishing to safeguard the welfare of the patient, would consent.

(6) A teacher or other person entrusted with the care and supervision of a minor for school purposes may use reasonable physical force upon such minor when and to the extent such teacher or other person reasonably believes such force to be necessary to (A) protect himself or herself or others from immediate physical injury, (B) obtain possession of a dangerous instrument or controlled substance, as defined in subdivision (9) of § 21a-240, upon or within the control of such minor, (C) protect property from physical damage, or (D) restrain such minor or remove such minor to another area, to maintain order.

(b) No person is justified in using force upon another person which would otherwise constitute an offense based solely on the discovery of, knowledge about or potential disclosure of the victim’s actual or perceived sex, sexual orientation or gender identity or expression, including under circumstances in which the victim made an unwanted, nonforcible, romantic or sexual advance toward the defendant, or if the defendant and victim dated or had a romantic relationship.