non compos mentis

adjective

ˌnän-ˌkäm-pəs-ˈmen-təs How to pronounce non compos mentis (audio)
Definition of non compos mentisnext
as in psychotic
unable to think in a clear or sensible way will seek to prove that the elderly tycoon was non compos mentis when he dictated that will

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Recent Examples of Synonyms for non compos mentis
  1. psychotic
  2. mad
  3. insane
  4. mental
  5. maniacal
  6. nuts
  7. crazy
  8. psycho
Adjective
  • But a poor reaction to her recovery medication kicked off a psychotic episode.
    — CT Jones, Rolling Stone, 26 Aug. 2026
  • Psychiatric disorders are generally divided into mood disorders and psychotic disorders, Osborne said; postpartum psychosis is a mood disorder, in which mood symptoms accompany psychotic symptoms.
    — Jen Christensen, CNN Money, 13 Aug. 2026
Definition of psychotic
Adjective
  • Riley has a talented veteran QB (Jayden Maiava), a strong O-line and now mad scientist Gary Patterson as defensive coordinator.
    — Stewart Mandel, New York Times, 20 Aug. 2026
  • It was worshipped as a goddess, believed to drive people mad, and even considered a realm for the dead.
    — Encyclopedia Britannica, Encyclopedia Britannica, 18 Aug. 2026
Definition of mad
Adjective
  • The new season has been absolutely insane through four episodes as the hunt to save Joe (Zoe Saldaña) from her kidnappers is underway.
    — David Hookstead OutKick, FOXNews.com, 25 Aug. 2026
  • If Gigi is malintentioned and insane and a homewrecker, there’s no story, right?
    — Hilary Lewis, HollywoodReporter, 25 Aug. 2026
Definition of insane
Adjective
  • Marshall had been charged with defrauding his mother’s estate of millions by inducing her to change her will in his favor after her mental capacity had faded.
    — Robert D. Mcfadden, Chicago Tribune, 21 Aug. 2026
  • Family businesses can build in legal safeguards, such as mandatory retirement ages or mental capacity evaluations, according to Rahn.
    — Hayley Cuccinello, CNBC, 20 Aug. 2026
Definition of mental
Adjective
  • Especially after a clunker of a season in 2025, superstar receiver Justin Jefferson won’t settle for anything other than maniacal attention to detail on and off the field.
    — Alec Lewis, New York Times, 28 July 2026
  • The odd thing about this choice is that, although the DSA’s platform is indeed chock-full of maniacal proposals, on this particular idea, the maniacs have a point.
    — Jonathan Chait, The Atlantic, 22 July 2026
Definition of maniacal
Adjective
  • But, spending a bunch of money on decorations for your son's dorm room, if that's happening, is nuts.
    — Joe Kinsey OutKick, FOXNews.com, 4 Aug. 2026
  • Fans went nuts as Aldis pulled Gunther to the middle of the ring.
    — Alfred Konuwa, Forbes.com, 1 Aug. 2026
Definition of nuts
Adjective
  • Meeting them in real life was a crazy experience and being able to record with them was super fun.
    — Nicole Fell, HollywoodReporter, 24 Aug. 2026
  • This crazy collision of pain, gratitude and faith now serves as the backbone of Leake’s new album Intimacy, which doesn’t shy away from the struggles his family endured.
    — Tricia Despres, PEOPLE, 21 Aug. 2026
Definition of crazy
Adjective
  • Which is psycho, absolutely psycho.
    — Ryan Coleman, Entertainment Weekly, 27 May 2026
  • The key figure turns out to be Alex’s mysterious Aunt Gladys, played in full psycho-biddy drag by Amy Madigan.
    — Louis Peitzman, Vulture, 8 Aug. 2025
Definition of psycho
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Browse Nearby Words

noncomplicated
non compos mentis
noncompound
See all Nearby Words

Cite this Entry

“Non compos mentis.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/non%20compos%20mentis. Accessed 27 Aug. 2026.

Copy Citation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of southpaw

See Definitions and Examples »

Popular in Grammar & Usage

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

What's the difference between 'fascism' and 'socialism'?

Commonly Misspelled Words
See More

Popular in Wordplay

See More

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Even More Words That Sound Like Insults But Aren't

Why do we say 'break a leg'?

16 Glee-ridden Words from Schitt's Creek
See More

Popular

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
alt-684346df967d5
Add A Letter Quiz Pick the letter that goes in the same spot in fou...
See All