boomerang /booˈmə-rang/

1. A curved missile used by the Australian Aborigines, sometimes so balanced that it returns towards the thrower
2. An act that recoils upon the agent

To recoil in such a way, backfire

• septentrionally
• septentriones
• septentrions
• septet
• septets
• septette
• septettes
• sept-foil
• septi-
• septic
• septicaemia
• septicaemias
• septicaemic
• septically
• septicidal
• septicities
• septicity
• septic shock
• septic tank
• septic tanks
• septiferous
• septiform
• septifragal
• septilateral
• septillion