Injuria Non Excusat Injuriam Law and Legal Definition

Injuria non excusat injuriam means a wrong does not excuse a wrong. This means that a wrong does not justify another. No one is entitled to take the law into his/her own hands, and therefore no one is entitled to commit a wrong in return for a wrong inflicted on him/her. If a person commits a wrong, the wrong which s/he suffered will not excuse or exculpate him/her from the consequences of his/her wrong doing.

However, law takes into consideration the provocation given or wrong inflicted in mitigation of a penalty imposed on a person, who under such circumstances commits a wrong. In some cases law even allows one injury to be set off against the other.