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temperamental

temperamental

12 6.5
Tends to change mood suddenly and act in an unexpected way
  • adjective
  • /ˌtɛmpəˈrɛmənˌtəl/
translation icon : temperamental
  • I should warn you that our hot water can be a little temperamental and may not always work as expected.

Secretary Haig, who famously craved the diplomatic limelight himself, accused Kirkpatrick of being temperamental.

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Examples

  • Most mornings, she drove to the gas station for coffee, cranking the engine of her temperamental van until it finally started.

  • Oh, these satellite phones are very temperamental.

  • It's not quite spring, and the weather is temperamental.

    Fiction book (2002)
  • I should warn you that our hot water can be a little temperamental.

  • Writers who became frustrated with Latin players simply wrote them off as being temperamental and too sensitive.

    Academic text (1994)
  • She's a temperamental old lass.

  • The oft-temperamental forward said after the win that his rapport with Rosales continues to improve.

    Blog text (10)
  • We have a notoriously picky and temperamental client who routinely tells off our salesmen.

    Blog text (4)
  • He's an emotional, temperamental player, often showing drastic mood swings during the game.

Synonyms

erratic
vstemperamental
94 6.1

Not regular or predictable and likely to change suddenly

focuses specifically on sudden mood or behaviour changes
unstable
vstemperamental
91 4.4

A person whose mood or behavior changes suddenly

matches that instability but is a broader everyday descriptor of mood changes
moody
vstemperamental
50 3.2

Often feels angry or sad quickly for no clear reason

includes that quick mood change but covers all mood types
fickle
vstemperamental
39 6.2

Changing often in a way you cannot rely on

covers mood and behaviour shifts more broadly rather than loyalty only
volatile
vstemperamental
34 7.4

Having sudden unpredictable changes in feelings toward others

is about quick mood shifts without stressing relationships or attachments
capricious
vstemperamental
19 7.9

Showing sudden changes in mood, like going from happy to angry

is the same idea focused on general mood or behaviour shifts
flaky
vstemperamental
  • Informal
15 5.9

Being a bit strange in behavior or appearance

is about quick mood shifts rather than odd or eccentric conduct
excitable
vstemperamental
14 4.1

Quick to become excited or nervous

describes sudden mood or behaviour shifts rather than simple excitability
high-strung
vstemperamental
12 7.2

Being very nervous and easily upset

is about sudden mood or behaviour change rather than general nervous tension
flighty
vstemperamental
9 7.4

A person who changes plans and loses interest easily

focuses more narrowly on mood and behaviour changing suddenly rather than distraction
mercurial
vstemperamental
7 8.2

Changing mood or behaviour suddenly and without warning

is similar but presented as a general tendency to mood change
hot and cold
vstemperamental
  • Informal
4 6.8

A person who feels interested one moment and not interested the next

describes mood shifts more generally, not only between enthusiasm and indifference
squirrely
vstemperamental
  • Informal
3 8.4

Acting nervous and strange in a way you cannot predict

is about sudden mood or behaviour change without implying oddness or nervousness
a bit switchy
vstemperamental
  • UK
9.2

Often changes mood or behavior quickly and without warning

is a general label for sudden mood or behaviour change without mildness
flitty
vstemperamental
  • UK
8.4

Acting quickly and changing mood or interest often

is similar but centers on mood and behaviour suddenness rather than movement
moonish
vstemperamental
  • Archaic
8.6

Having moods that change often, sometimes happy and sad

is similar but describes suddenness rather than cyclical imagery

Antonyms

473 2.3

Not likely to change and stays steady over time

189 2.5

Easy to guess what will happen

Compounds

Sudden unpredictable mood changes that affect how a person acts

A car that often does not start or breaks down

How Temperamental

explosive
233 4.6
volatile
34 7.4
temperamental
12 6.5
moody
50 3.2

Surface Forms

temperamental positive

Morphology

temperamental = temperament (semi-transparent) = temper + ment + al

The word is built regularly from 'temperament' plus '-al', but the sense 'moody or unpredictable' is a conventional extension rather than a fully literal composition.

Etymology

Temperamental shares the root temper and Latin temperare 'to mix' or 'to control', which gives a simple picture: if someone's 'mix' of moods is not steady, it can change quickly. That's why temperamental is used for someone or something that is moody or unpredictable.