plural of trench mentality

an attitude towards differences of opinion, where oppositional stand-off or conflict is preferred over debate and compromise.

plural of mental midget

(informal) A stupid person.

plural of mental aberration

A deviation in mental function.

(UK, slang) An insane person; a nutcase.

(psychology, dated) A developmental disability in which the person has a very low intelligence quotient, usually below 70, plus difficulty in multiple areas of daily life. Evidence of this disability must have appeared before the person reached adulthood for diagnosis.

plural of plantation mentality

A mentality according to which an organization or society is divided into a ruling elite and a class of workers treated as inferior, especially along racial lines.