friendly fire UK /ˌfɹɛn(d).li ˈfaɪ.ə/US /ˌfɹɛn(d).li ˈfaɪ.ɚ/ noun1 •Weapons fire coming unintentionally from allied or friendly forces rather than from enemy forces, usually that which causes damage or casualties.Labour is set to publish its own ideas 'shortly', which could mean anything from days to weeks. Meanwhile, the Conservatives' proposals have faced some 'friendly fire' from their own side. — 2024