Definition of mental age in English:

mental age

Pronunciation /ˈmen(t)l āj/ /ˈmɛn(t)l eɪdʒ/

Translate mental age into Spanish


  • A person's mental ability expressed as the age at which an average person reaches the same ability.

    ‘she was 65 but had a mental age of two’
    • ‘Indeed, by the time children's mental ages reach 24 months, significant delays in expressive language abilities are evident in 83% to 100% of children with Down syndrome.’
    • ‘I would also point out that if an adult were found to have the mental age of a 10 year old, they would be considered unfit to stand trial.’
    • ‘The keen Stockport County and Manchester City fan, who was 38 when he vanished, was described as having a mental age of an eight-year-old child and needed constant care and medication for epilepsy.’
    • ‘Police are becoming increasingly worried for the safety of a 13-year-old with a mental age of eight who went missing a week ago.’
    • ‘Assessments should be made from childhood so that people with a mental age of nine or ten are not left to fend for themselves.’