What is the meaning of heedlessness?

noun

8
 
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APAWordNet. (2010). heedlessness. Retrieved December 12, 2017, from http://smartdefine.org/heedlessness/definitions/1210896
ChicagoWordNet. 2010. "heedlessness" http://smartdefine.org/heedlessness/definitions/1210896 (accessed December 12, 2017).
HarvardWordNet 2010, heedlessness, Smart Define, viewed 12 December, 2017, <http://smartdefine.org/heedlessness/definitions/1210896>.
MLAWordNet. "heedlessness" 23 October 2010. Web. 12 December 2017. <http://smartdefine.org/heedlessness/definitions/1210896>