menˈtalist noun

1. An adherent of the theory of mentalism
2. A crazy person ( slang, also adjective)

mentalisˈtic adjective

mentality /-talˈi-ti/ noun

1. Mind
2. Mental endowment
3. A type of mind
4. A way of thinking

menˈtally adverb

mentāˈtion noun

Mental activity

menticide /menˈti-sīd/ noun

The systematic reduction of a person's mind by psychological or other pressure to a point where views formerly repugnant will be accepted

mental age noun

The age in years, etc, at which an average child would have reached the same stage of mental development as the individual under consideration

mental block noun

A psychological barrier preventing the development of a thought process

mental cruelty noun

Conduct in marriage, not involving physical cruelty or violence, that wounds feelings or personal dignity, offering grounds for separation or divorce

mental deficiency noun

Mental retardation

mental home or mental hospital noun (old)

A home or hospital for people with mental illness

mentally handicapped adjective

Having impaired intellectual ability, either congenitally or as a result of brain damage

mental patient noun (old)

A person being treated in a mental home or hospital

mental retardation noun

Retarded development of learning ability, whether arising from innate defect or from some other cause

mental set noun (behaviourism)

1. The tendency to consider new problems, etc, in the same way as old ones
2. A mindset

go mental (slang)

1. To become mentally unbalanced, go mad
2. To become extremely angry