Thesaurus

insanity

noun

Synonyms & Antonyms of insanity

1 a serious mental disorder that prevents one from living a safe and normal life
  • his incurable insanity requires that he spend the rest of his life in a mental hospital

Synonyms for insanity

Words Related to insanity

Near Antonyms for insanity

Antonyms for insanity

2 a foolish act or idea
  • everyone laughed at the latest insanity from the town eccentric

Synonyms for insanity

Words Related to insanity

Near Antonyms for insanity

See the Dictionary Definition 

Learn More About insanity

Time Traveler for insanity

Time Traveler

The first known use of insanity was in 1590

See more words from the same year

Thesaurus Entries Near insanity

insanities

insanity

insatiable

See More Nearby Entries 

Cite this Entry

“Insanity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insanity. Accessed 16 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on insanity

Nglish: Translation of insanity for Spanish Speakers

Britannica English: Translation of insanity for Arabic Speakers

Britannica.com: Encyclopedia article about insanity

WORD OF THE DAY

Test Your Vocabulary

Name That Color

  • a light greenish blue color
  • Name that color:
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!