Antisocial behavior refers to actions or behaviors that are disruptive, destructive and harmful to others. It is characterized by a lack of regard for social norms, rules and responsibilities, leading to negative consequences for both the individual exhibiting such behavior as well as those around them. This type of conduct often includes aggressive or violent acts, lying, stealing, truancy, substance abuse, and other forms of criminal activity. Antisocial behavior can also manifest in more subtle ways, such as avoiding eye contact, failing to follow through on commitments, or exhibiting a lack of empathy towards others. It is generally considered an indicator of deeper psychological issues that may require intervention and treatment.