What is the meaning of fly off the handle?

verb

7
 
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APAWordNet. (2010). fly off the handle. Retrieved January 19, 2018, from http://smartdefine.org/fly_off_the_handle/definitions/1276711
ChicagoWordNet. 2010. "fly off the handle" http://smartdefine.org/fly_off_the_handle/definitions/1276711 (accessed January 19, 2018).
HarvardWordNet 2010, fly off the handle, Smart Define, viewed 19 January, 2018, <http://smartdefine.org/fly_off_the_handle/definitions/1276711>.
MLAWordNet. "fly off the handle" 23 October 2010. Web. 19 January 2018. <http://smartdefine.org/fly_off_the_handle/definitions/1276711>