sanity Definition

  • 1the ability to think and behave in a normal and rational manner
  • 2the state of being mentally healthy and not suffering from mental illness

Using sanity: Examples

Take a moment to familiarize yourself with how "sanity" can be used in various situations through the following examples!

  • Example

    I began to doubt my sanity after hearing the strange noises.

  • Example

    The stress of the job was affecting his sanity.

  • Example

    The defendant was found not guilty by reason of insanity.

  • Example

    She was committed to a mental institution for the sake of her sanity.

sanity Synonyms and Antonyms

Synonyms for sanity

Antonyms for sanity

Phrases with sanity

  • lose one's sanity

    to become insane or mentally unstable


    The constant pressure of work made him lose his sanity.

  • question someone's sanity

    to doubt or be skeptical about someone's mental stability or soundness of mind


    After hearing his bizarre ideas, I began to question his sanity.

  • a process of testing or verifying something to ensure that it is reasonable, logical, or accurate


    Before submitting the report, we need to do a sanity check to make sure all the data is correct.

Origins of sanity

from Latin 'sanitas', meaning 'health'


Summary: sanity in Brief

The term 'sanity' [ˈsanəti] refers to the ability to think and behave in a normal and rational manner, as well as the state of being mentally healthy. It can be lost due to stress or other factors, leading to phrases like 'lose one's sanity.' The term also includes idioms like 'sanity check,' which denotes a process of testing or verifying something.