Open English Wordnet
Adjectives
(a)heedless, unheedingmarked by or paying little heed or attention“We have always known that heedless self-interest was bad morals; we know now that it is bad economics” (Franklin D. Roosevelt),
“heedless of danger”,
“heedless of the child's crying” (s)heedless, recklesscharacterized by careless unconcern“the heedless generosity and the spasmodic extravagance of persons used to large fortunes” (Edith Wharton),
“reckless squandering of public funds”