- heedlessness, mindlessness, rashness - the trait of acting rashly and without prudence
--1 is a kind of imprudence
--1 has particulars: lightheadedness - recklessness, foolhardiness, rashness - the trait of giving little thought to danger
--2 is a kind of unthoughtfulness, thoughtlessness
--2 has particulars: adventurism; brashness; desperation