A lack of ethics or principles in one's behavior or actions.

नैतिकता की कमी

English Usage: The criminal was sentenced due to his moral deficiency, which led him to commit heinous acts.

Hindi Usage: अपराधी को उसकी नैतिकता की कमी के कारण सजा सुनाई गई, जिसने उसे गंभीर अपराध करने पर मजबूर किया।