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breach

C1
Common

Pronunciation

UK

  • /brˈiːtʃ/

US

  • /ˈbritʃ/

Meanings

Noun

  1. a failure to obey a law, agreement, duty, or trust

  2. an unauthorized break-in to data, security, or a computer system

  3. a gap or opening made in a wall, barrier, or defense

Verb

  1. to break or fail to keep a law, agreement, duty, or trust

  2. to break through or cross a wall, barrier, or defense

  3. for a whale or similar sea animal, to leap out of the water

Beyond the definition

A breach isn't just a gap in a wall—it's any breaking of a promise, rule, or agreement. Think of a castle wall with a breach; enemies can get through! Similarly, if you breach a contract, you break its terms. A data breach means sensitive information has been accessed without permission. It implies a serious violation and often carries consequences. You might hear about a "breach of security" or a "breach of trust."

Imagine two friends making a pact to keep a secret. If one friend tells someone else, that's a breach of their promise—an active violation of the agreement they made. Shakespeare used the word often, especially when describing broken vows or disrupted peace, emphasizing that a breach is more than just a mistake; it is a significant rupture in what was supposed to be secure.

Examples

  1. 1

    Physical gap

    The dog escaped through a breach in the fence.

  2. 2

    Data security

    The company told customers about a data breach that exposed email addresses.

  3. 3

    Contract violation

    Missing the deadline would put us in breach of the contract.

    • Patternin breach of + rule/law/agreement

      breaking it

  4. 4

    Broken trust

    She saw it as a breach of trust when he shared her secret.

More examples
  1. 5

    Safety rules

    The airline was fined for breaching safety rules.

  2. 6

    Taking over

    When the editor fell ill, her deputy stepped into the breach.

    • Phrasestep into the breach

      take over in a difficult situation when someone else cannot continue

See also

Similar

Shades of meaning

Contrast

Do not confuse

Used with (collocations)

  • breach of contract
  • breach of trust
  • security breach
  • serious breach

Word family

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Forms and spellings

4 forms open this card.

Main spelling

  • breachnounverb

Forms

  • breachedpast tenseverbnoun
  • breachespluralnounverb
  • breaching-ing formverbnoun