Definitions:

1. characterized by careless unconcern adjective
   • the heedless generosity and the spasmodic extravagance of persons used to large fortunes Edith Wharton
2. marked by or paying little heed or attention adjective
   • We have always known that heedless selfinterest was bad morals

Synonyms:

• reckless
• unheeding

NearBy Words:

• heedlessly
• heedlessness