1. loss. Damage, detriment, harm, mischief refer to injuries of various kinds. Damage is the kind of injury or the effect of injury that directly impairs appearance, value, usefulness, soundness, etc.: Fire causes damage to property. Detriment is a falling off from an original condition as the result of damage, depreciation, devaluation, etc.: Overeating is a detriment to health. Harm may denote either physical hurt or mental, moral, or spiritual injury: bodily harm; harm to one's self-confidence. Mischief may be damage, harm, trouble, or misfortune caused by a person, especially if maliciously: an enemy who would do one mischief. 4. impair, hurt.