From Old English 'hearm' (hurt, grief), from Proto-Germanic *harmaz — covering physical and emotional damage since ancient times.
Physical injury or damage; moral injury.
From Old English 'hearm' (hurt, grief, insult), from Proto-Germanic *harmaz (pain, shame). Both physical and emotional senses from the start. Key roots: *harmaz (Proto-Germanic: "pain, shame").
Despite spelling similarity, 'harm' and 'harmony' are unrelated — 'harmony' is Greek, 'harm' is purely Germanic.