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adjective mental pronunciation in British English /ˈment(ə)l/
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  1. 1
    [only before noun] existing in the mind
    It is clear that mental activity does not stop when we’re asleep.
    mental picture/image: I had a complete mental picture of the building I wanted to create.
    1. a.
      relating to the mind
      mental agility/development
    2. b.
      relating to the health of the mind, or illnesses of the mind
      mental health problems
      He suffered a complete mental collapse.
  2. 2
    informal old-fashioned mentally ill
    1. a.
      offensive crazy or stupid

derived word

mentally

 mental pronunciation in British English adverb
He was in good health both physically and mentally.
mentally ill

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