debile

Example:The movie portrays a family dealing with a mentally challenged child, highlighting their struggles.

Definition:afflicted with a congenital or developmental defect of the brain, leading to mental deficiency or impairment.

Example:He has been diagnosed with mental deficiency, which was just one aspect of his debile condition.

Definition:having a below-average intelligence, especially as the result of injury, disease, or congenital factors.

Example:Although outdated, the term mental retardate was once used to describe severely debiles.

Definition:a person with an intellectual disability, especially a serious and permanently severe one, but a term considered offensive in modern usage.