/ˈrɛkləsli/ – adverb
Definition: Một cách không cẩn thận hoặc không chú ý đến hậu quả.
A more thorough explanation: done in a way that is full of risk; done without attention to the danger or consequences of your actions; done in a way that shows you do not understand the likely harm you may cause other people
Example: The court heard that he drove his Volvo S60 recklessly and dangerously along Ormonde Street.