Meaning of “mental” in the English Dictionary

"mental" in British English

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mentaladjective

uk /ˈmen.təl/ us /-t̬əl/

B2 [ before noun ] relating to the mind, or involving the process of thinking:

The family has a history of mental disorder.
A doctor was asked about the mental state of the prisoner.
She had a mental picture (= a picture in her mind) of how the house would look when they finished redecorating it.

UK slang crazy

More examples

  • This job requires considerable mental agility.
  • These mental exercises are designed to break linear thinking habits and encourage the creativity that is needed for innovation.
  • He suffers periodic mental breakdowns.

(Definition of “mental” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"mental" in American English

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mentaladjective [ not gradable ]

us /ˈmen·təl/

of or about the mind, or involving the process of thinking:

Stress can affect both your physical and mental health.
Many people suffer from some form of mental illness during their lives.
I made a mental note of her address (= I will try to remember it).
mentally
adverb [ not gradable ] us /ˈmen·təl·i/

mentally ill

(Definition of “mental” from the Cambridge Academic Content Dictionary © Cambridge University Press)