reckless

英 ['reklɪs] 美['rɛkləs]

1. marked by unthinking boldness; with defiant disregard for danger or consequences;: "foolhardy enough to try to seize the gun from the hijacker"; "became the fiercest and most reckless of partisans"-Macaulay; "a reckless driver"; "a rash attempt to climb the World Trade Center"

2. characterized by careless unconcerned;: "the heedless generosity and the spasmodic extravagance of persons used to large fortunes"- Edith Wharton; "reckless squandering of public funds"