Definition of mental adjective from the Oxford Advanced Learner's Dictionary

        

    mental

     adjective
    adjective
    BrE BrE//ˈmentl//
     
    ; NAmE NAmE//ˈmentl//
     
    Describing strange traits
     
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  1. 1  [usually before noun] connected with or happening in the mind; involving the process of thinking the mental process of remembering Do you have a mental picture of what it will look like? I made a mental note to talk to her about it. He has a complete mental block (= difficulty in understanding or remembering) when it comes to physics. The experience caused her huge amounts of mental suffering.
  2. 2  [usually before noun] connected with the state of health of the mind or with the treatment of illnesses of the mind synonym psychological mental health a mental disorder/illness/hospital She was suffering from physical and mental exhaustion. The analysis of dreams can reveal details of a person's mental state. compare psychiatric
  3. 3[not usually before noun] (British English, slang) crazy Watch him. He's mental. My dad will go mental (= be very angry) when he finds out. See related entries: Describing strange traits
  4. Word Origin late Middle English: from late Latin mentalis, from Latin mens, ment- ‘mind’.Extra examples Do you have a mental picture of the scene? Doctors are now more able to record people’s mental processes. I have a complete mental block when it comes to physics. I made a mental note to call her as soon as I got home. Mental performance can be seriously impaired by alcohol. She is sixteen but has a mental age of five.