What is the meaning of heedlessness?

noun

8
 
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APAWordNet. (2010). heedlessness. Retrieved August 20, 2018, from http://smartdefine.org/heedlessness/definitions/1210896
ChicagoWordNet. 2010. "heedlessness" http://smartdefine.org/heedlessness/definitions/1210896 (accessed August 20, 2018).
HarvardWordNet 2010, heedlessness, Smart Define, viewed 20 August, 2018, <http://smartdefine.org/heedlessness/definitions/1210896>.
MLAWordNet. "heedlessness" 23 October 2010. Web. 20 August 2018. <http://smartdefine.org/heedlessness/definitions/1210896>