misfirePronunciation: /mɪsˈfʌɪə/Translate misfire | into French | into German | into Italian | into Spanish Definition of misfire verb [no object] 1(of a gun or missile) fail to discharge or fire properly: as she raised her pistol again, it misfired (of an internal-combustion engine) undergo failure of the fuel to ignite correctly or at all:the car would misfire occasionally from the cold (of a nerve cell) fail to transmit an electrical impulse at an appropriate moment: as these nerves misfire and die, the muscles begin to shrink 2(especially of a plan) fail to produce the intended result:he didn’t know that his plan had misfired noun Pronunciation: /also ˈmɪs-/ a failure of a gun or missile to fire correctly: the weapons are to be replaced because of problems with misfires a failure of fuel to ignite correctly in an internal-combustion engine: he drove into the pits to have a misfire curedmisfire in other Oxford dictionaries Definition of misfire in the US English dictionary