" mental "

[Adjective]  | "men*tal" | \ ˈmen-tᵊl \

1: of or relating to the mind; specifically : of or relating to the total emotional and intellectual response of an individual to external reality

2: of or relating to intellectual as contrasted with emotional activity

3: of, relating to, or being intellectual as contrasted with overt physical activity

Origin: 15th century ;

 Middle English, from Late Latin mentalis, from Latin ment-, mens mind {mat|mind|};

[Adjective]  | "mental" 

1: of or relating to the chin : genial

Origin: circa 1727 ;

 Latin mentum "chin" + {see: |-al:1|-al:1} {mat|mouth:1|};

[Noun]  | "mental age" 

1: a measure used in psychological testing that expresses an individual's mental attainment in terms of the number of years it takes an average child to reach the same level

Origin: 1910 ;

[Noun]  | "mental case" 

1: a person who is mentally unsound —not used technically

Origin: 1881 ;

[Noun]  | "mental deficiency" 

1: a deficiency in cognitive functioning; specifically : intellectual disability

Origin: 1820 ;

[Noun]  | "mental health" 

1: the condition of being sound mentally and emotionally that is characterized by the absence of mental illness and by adequate adjustment especially as reflected in feeling comfortable about oneself, positive feelings about others, and the ability to meet the demands of daily life; also : the general condition of one's mental and emotional state

2: health care dealing with the promotion and improvement of mental health and the treatment of mental illness —often used before another noun

Origin: circa 1650 ;

[Noun]  | "mental health day" 

1: a day that an employee takes off from work in order to relieve stress or renew vitality

Origin: 1971 ;

[Noun]  | "mental illness" 

1: any of a broad range of medical conditions (such as major depression, schizophrenia, obsessive compulsive disorder, or panic disorder) that are marked primarily by sufficient disorganization of personality, mind, or emotions to impair normal psychological functioning and cause marked distress or disability and that are typically associated with a disruption in normal thinking, feeling, mood, behavior, interpersonal interactions, or daily functioning

Origin: 1724 ;

[Noun]  | "mental retardation" 

1: mild to severe impairment in intellectual ability equivalent to an IQ of 70 to 75 or below that is accompanied by significant limitations in social, practical, and conceptual skills (as in interpersonal communication, reasoning, or self-care) necessary for independent daily functioning and that has an onset before age 18 : intellectual disability

Origin: 1901 ;

[Plural noun]  | "mental faculties" 

1: ability to think clearly

[Adjective]  | "mental"