Lunatic Meaning and Definition

Pronunciation

/ˈluːnətɪk/

Part of Speech

Noun

Definition

A person who is considered to be mentally unstable or deranged, often in a violent or unpredictable way.

Examples

The lunatic escaped from the asylum and caused chaos in the city.
He was accused of being a lunatic for his radical ideas.

Synonyms

Madman
Maniac

Antonyms

Sane
Rational

Additional Information

The term “lunatic” was originally derived from the Latin word “luna,” meaning moon, as it was once believed that the full moon could cause people to become insane. Today, the term is often used informally to describe someone who is acting erratically or unpredictable.

In modern psychiatry, the term “lunatic” is no longer used as a formal diagnosis, as it is considered to be offensive and stigmatizing. Instead, mental health professionals use more specific and nuanced terms to describe mental illnesses, such as schizophrenia or bipolar disorder.

Etymology

The word “lunatic” originates from the Latin “luna,” meaning moon, and was first used in the 15th century to describe a person who was mentally unstable due to the supposed influence of the moon.

Usage Notes

The term “lunatic” is often used informally and colloquially, but it is generally considered to be derogatory and offensive when used to describe someone with a mental illness. In formal or professional contexts, it is better to use more specific and nuanced language.

Cultural References

The term “lunatic” has been used in popular culture to describe characters or individuals who are seen as eccentric or unpredictable, such as the Joker in Batman or the character of Jack Torrance in The Shining.

Idiomatic Expressions or Phrases

Driving me lunatic
Lunatic fringe

Related Words or Phrases

Insane
Crazy
Mad

Collocations

lunatic asylum
lunatic behavior
lunatic partner

Frequency of Use

The term “lunatic” is relatively uncommon in modern language, and is often used in informal or colloquial contexts. However, it is still widely recognized and understood.