unbridled

IPA/ʌnˈbraɪdld/
KK[ənbrˈaɪdəld]IPA/ʌnˈbraɪdld/

unbridled — adjective

  • unbridledpositive
  • more unbridledcomparative
  • most unbridledsuperlative

1. used to describe feelings, behaviour, or influence that is not held back within

1.adjectiveB2
Definition

used to describe feelings, behaviour, or influence that is not held back within normal or sensible limits, often so strongly that it causes problems or seems too extreme.

Example

The dictator's unbridled cruelty finally sparked a rebellion across the country.

collocation: unbridled cruelty

Jabari's unbridled enthusiasm for the project inspired everyone on his team.

collocation: unbridled enthusiasm

Common collocations
  • unbridled enthusiasm
  • unbridled greed
  • unbridled ambition
  • unbridled joy
  • unbridled power
  • unbridled cruelty
  • unbridled optimism
Synonyms
  • uncontrolled

    broader meaning and less formal; can be used in medical or technical contexts where 'unbridled' sounds odd

  • unrestrained

    very close in meaning, but slightly less dramatic; common in formal writing about behaviour

  • unchecked

    emphasises that nothing is stopping something from growing or spreading, often used with 'power', 'growth', 'ambition'

  • wild

    more informal and positive; 'wild enthusiasm' suggests energy, while 'unbridled enthusiasm' suggests excess

Antonyms
  • restrained

    the closest single-word opposite; suggests deliberate control over one's emotions or behaviour

  • controlled

    broader opposite; used in many contexts where 'unbridled' cannot be used literally

Grammar Patterns

unbridled + abstract noun (enthusiasm / greed / joy / ambition)

Usage Note

Almost always used with abstract nouns describing emotions, behaviour, or power. The tone is frequently negative, suggesting that the lack of control leads to undesirable results. Unlike 'uncontrolled', 'unbridled' is primarily figurative and rarely appears in technical or medical contexts.

Common Mistakes

The unbridled dog ran through the garden.
The unleashed dog ran through the garden.
'Unbridled' is figurative (about emotions/behaviour), not literal. Use 'unleashed' for animals freed from a physical restraint.
She felt unbridled happiness when she saw the gift.
She felt overwhelming happiness when she saw the gift.
While 'unbridled' is possible here, it is formal and slightly dramatic; 'overwhelming' is more natural in everyday speech.

Word family

Synonym discussion

Sense: adjective/1

All four words describe a lack of limitation, but they differ in register, connotation, and typical usage. 'Uncontrolled' is the broadest and most neutral term — it can describe anything from a child's laughter to a medical condition ('uncontrolled bleeding'), making it the safest everyday choice. 'Unrestrained' is closer to 'unbridled' in formality and is common in reviews and criticism ('unrestrained praise', 'unrestrained capitalism'). 'Unchecked' carries a strong sense of danger or neglect — it suggests that someone should have stopped the thing but did not ('unchecked population growth', 'unchecked corruption'). 'Wild' is the most informal and can be positive ('wild excitement') or negative ('wild behaviour'). For example, a journalist might write about 'unbridled ambition' in a biography (formal, literary) but describe 'wild ambition' in a casual conversation (informal, vivid).

uncontrolled ↗unrestrained ↗unchecked ↗wild ↗

Etymology

Old EnglishMiddle EnglishEnglish

The word comes from the prefix 'un-' (meaning 'not') attached to 'bridled', the past participle of the verb 'bridle'. A bridle is the headgear used to control a horse. So something 'unbridled' is literally 'not wearing a bridle' and therefore free to run wherever it wants. This literal horse-related meaning was recorded in English as early as the late 1300s. By the 1500s, writers had begun using it figuratively to describe emotions, behaviour, or power that is not held back.

First known use

14th century

14th century, in the meaning defined at sense 1