temperamental

adjective

tem·​per·​a·​men·​tal ˌtem-p(ə-)rə-ˈmen-tᵊl How to pronounce temperamental (audio)
ˌtem-pər-ˈmen-
1
a
: marked by excessive sensitivity and impulsive mood changes
a temperamental child
b
: unpredictable in behavior or performance
a temperamental computer
2
: of, relating to, or arising from temperament : constitutional
temperamental peculiarities
temperamentally adverb

Examples of temperamental in a Sentence

The actor is known for being temperamental. The old computer is temperamental. They divorced due to temperamental differences.
Recent Examples on the Web
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.
Those are the numbers attached to a 6-year-old cat named Mia, a slightly temperamental girl who is long overdue to find that special someone who will give her another chance at a comfortable life, an Indiana shelter says. Tj MacIas, Kansas City Star, 24 Apr. 2025 John Feinstein, the Washington Post sportswriter and columnist who famously spent a season with temperamental Indiana University men’s basketball coach Bobby Knight to write the admired 1986 book A Season on the Brink, died Thursday. Mike Barnes, The Hollywood Reporter, 13 Mar. 2025 Lovable, charming and generous, yet temperamental, arrogant and obscene. Matthew Carey, Deadline, 11 Apr. 2025 Steve Mariucci and the coaching staff didn’t seem to know what to make of Rice, who had become more temperamental and withdrawn. Jerry McDonald, The Mercury News, 12 Feb. 2025 See All Example Sentences for temperamental

Word History

Etymology

borrowed from New Latin temperāmentālis "of the temperament," from Latin temperāmentum temperament + -ālis -al entry 1

First Known Use

1646, in the meaning defined at sense 2

Time Traveler
The first known use of temperamental was in 1646

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Cite this Entry

“Temperamental.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/temperamental. Accessed 1 May. 2025.

Kids Definition

temperamental

adjective
tem·​per·​a·​men·​tal ˌtem-p(ə-)rə-ˈment-ᵊl How to pronounce temperamental (audio)
1
: of or relating to temperament
temperamental peculiarities
2
a
: likely to be easily upset
a temperamental movie star
b
: unpredictable in performance
a temperamental motor
temperamentally adverb

More from Merriam-Webster on temperamental

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