irreparable injury

Definition from Nolo’s Plain-English Law Dictionary

Harm that no measurable monetary compensation can cure or reverse, such as cutting down shade trees, polluting a stream, or not giving a child needed medication. Proving irreparable injury is often required in order to request a judicial injunction, writ, temporary restraining order, or other assistance in immediately blocking the activity (usually pending further court proceedings). Also referred to as irreparable harm.

Definition provided by Nolo’s Plain-English Law Dictionary.