Irreparable/ɪˈrepərəbl/ Definition 1 of 1Pro Tip 1/3Permanent Damage Use 'irreparable' to describe damage that's permanent and can't be repaired. The earthquake caused irreparable damage to the ancient temple. Pro Tip 2/3Lost Forever When something valuable is lost and can't be regained, 'irreparable loss' is apt. The theft resulted in an irreparable loss of family heirlooms. Pro Tip 3/3Emotional Context 'Irreparable' can also refer to deep emotional wounds that won't heal. The betrayal caused irreparable hurt that affected their friendship.