This is the 10154th most frequent Russian word.
беппечний
It seems there's a small typo in the word you provided, as "беппечний" doesn't exist in Russian. Perhaps you meant "беспечный"? If so, the definition in English is "carefree" or "reckless."
The word 'беспечен' in this sentence is used to describe someone's attitude or behavior. It conveys a lack of consideration or caution towards the consequences of actions.
Он был беспечен в своих действиях, не думая о последствиях.
He was careless in his actions, not thinking about the consequences.
Here, 'беспечный' describes a personality trait that is attractive due to its lighthearted and unconcerned quality.
Её беспечный характер привлекал людей своей лёгкостью.
Her carefree nature attracted people with its lightness.
In this context, 'беспечный' reflects a casual or inattentive manner that might result in errors.