1. An unusual, atypical, or deviant way of behaving, functioning, or occurring that deviates from what is considered normal or standard
The patient exhibited behavior in an abnormal manner.
O paciente exibiu comportamento de maneira anormal.
2. A method or mode of action that is irregular or not conforming to expected patterns
The machine was operating in an abnormal manner, suggesting mechanical failure.
A máquina estava funcionando de maneira anormal, sugerindo falha mecânica.