De injuria Law and Legal Definition

De injuria is the replication by which the plaintiff in an action of tort denies the sufficiency of the excuse or justification set up by the defendant. The significance of this replication is to insist that the defendant committed the act complained of, from a motive and impulse altogether different from that insisted on by the plea. For instance, if the defendant has justified a battery under a writ of capias, having averred, as he must do, that the arrest was made by virtue of the writ; the plaintiff may rely de injuria sua propria absque tali causa, that the defendant did the act of his own wrong, without the cause by him alleged.