A person in whose case there exists mental defectiveness is often referred to as a “mentally challenged person”, “person with intellectual disability”, or in legal terms, “a person of unsound mind.”Mental defectiveness means there is a condition that affects the person’s ability to reason, think clearly, or function socially and emotionally at the same level as others of the same age. This term is used in psychology, law, and education when referring to individuals who may need special protection, support, or accommodations due to their mental condition.In modern contexts, it is more appropriate and respectful to use terms such as,Person with developmental disabilityPerson with cognitive impairmentNeurodivergent individual (depending on the condition)Using people-first language (e.g., “person with…” rather than labeling) is encouraged to promote dignity and inclusion.