Extinguish/ɪkˈstɪŋɡwɪʃ/ Definition 1 of 3Pro Tip 1/2Literal Action Used when someone physically puts out a fire or light. Firefighters regularly extinguish fires in emergency situations. Pro Tip 2/2Complete Action Emphasizes that the fire or light is gone, not just reduced. Please make sure you extinguish the campfire completely before leaving.