reckless

adj.

鲁莽的，不顾危险的；粗心大意的；满不在乎的；胆大妄为

reckless driving鲁莽驾驶；驾驶疏忽

1. He's a reckless driver.
   他是个鲁莽的司机。
2. He apologized for their reckless behavior.
   他对他们的鲁莽行为道了歉。
3. His brother is a reckless gambler.
   他的弟弟是个不计后果的赌徒。
4. It's the way you try to sound rough or reckless.
   你说起话来故意这样显得很粗野或者毫不在乎。

Testing reckless drivers for cocaine and marijuana.
Reckless driving in adolescence: 'state' and 'trait' factors
Reckless behavior in adolescence: A developmental perspective
Corporate Risk Analysis: A Reckless Act?
Heavy metal music and reckless behavior among adolescents.
Socialization and adolescent reckless behavior: A reply to Jessor
Sensation seeking, aggressiveness, and adolescent reckless behavior.
The impact of mortality salience on reckless driving: a test of terror management mechanisms.
Reckless Endangerment: How Outsized Ambition, Greed, and Corruption Led to Economic Armageddon by GRETCHEN MORGENSON; JOSHUA ROSNER
Risky business: executive function, personality, and reckless behavior during adolescence and emerging adulthood