Legal Definitions - alterum non laedere

ALTERUM NON LAEDERE

Alterum non laedere is a Latin phrase that means "not to injure another." It is a principle in Roman and civil law that requires individuals to avoid causing harm to others through their words or actions.

For example, if someone spreads false rumors about another person that could harm their reputation, they would be violating the principle of alterum non laedere. Similarly, if someone physically harms another person, they would also be violating this principle.

This principle is one of the three general precepts in which Justinian expressed the requirements of the law. The other two are honeste vivere (to live honestly) and suum cuique tribuere (to give each person what is due to them).