Definition of Heedlessness

Noun: heedlessness  heed-lus-nus

1. A lack of attentiveness (as to children or helpless people)
   - inattentiveness
    
2. The trait of acting rashly and without prudence
   - mindlessness, rashness
    
3. The trait of forgetting or ignoring your responsibilities
   - unmindfulness, inadvertence, inadvertency

See also:
heedlessly
heedlessnesses