heedless
reckless / careless / oblivious / unmindful
Adjective
This term describes a state of active negligence or a willful disregard for caution. It carries a stronger connotation of recklessness than simple forgetfulness, suggesting a failure to acknowledge risks that are clearly present or explicitly stated. In usage, it is almost exclusively paired with the preposition of to specify the object being ignored. While it can describe a momentary lapse in judgment, it often characterizes a personality trait or a specific mood of defiance and impulsivity.