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1. Definition + Rich Everyday Explanation
Breach (noun / verb) ( bri:ç ) = an act of breaking, violating, or failing to respect a rule, law, agreement, trust, or security barrier.
Literally, a breach refers to a physical opening created by force, such as a hole in a wall, a broken fence, or a gap in a defence. Something that was meant to protect or separate is damaged, allowing access where there shouldn’t be any.
In everyday modern English, breach is used much more often in a figurative sense. When someone commits a breach of rules, a breach of trust, or a breach of contract, they violate an agreement or expectation. The word strongly suggests seriousness — not a small mistake, but a meaningful failure that can have consequences.
As a verb, to breach means to break or violate something that is supposed to be respected or protected. In digital and professional contexts, people often talk about data breaches, where private information is exposed due to weak security.
Examples from the street:
- “That was a serious breach of trust” → someone broke confidence or loyalty
- “The company reported a data breach” → private information was exposed
- “He breached the agreement” → he failed to follow the terms he accepted
2. Most Common Patterns
- breach of + noun → violation of a rule, law, duty, or trust
- breach a contract/agreement → fail to respect legal terms
- breach the law/rules → break formal regulations
- data/security breach → unauthorised access to information
- breach something (verb) → violate or break something protected
3. Idioms
- a breach of trust → an action that destroys confidence or loyaltyExample: “Sharing private messages without permission is a clear breach of trust.”
- plug the breach → fix a serious weakness or problem quicklyExample: “The company hired experts to plug the breach after the cyberattack.”
4. Example Sentences
- The employee committed a breach of confidentiality by sharing private files→ Sensitive information was revealed when it should have been protected.
- Failing to deliver the product on time is a clear breach of contract→ One side did not respect the agreed legal terms.
- The hacker managed to breach the company’s security system overnight→ Digital defences were broken and unauthorised access occurred.
- Lying to your team creates a serious breach of trust→ Once trust is broken, cooperation becomes difficult.
- The company was fined for breaching the law on data protection→ Legal rules were violated, leading to punishment.
- A data breach exposed thousands of customers’ personal details→ Private information became accessible to outsiders.
- He breached the agreement by using the material for personal gain→ He acted against the conditions he had accepted.
- Security guards reacted quickly when protesters tried to breach the gates→ They attempted to break through a physical barrier.
- Ignoring classroom rules may seem small, but it is still a breach→ Even minor violations weaken authority and structure.
- After the incident, the organisation worked hard to repair the breach→ They tried to restore trust and prevent further damage.
5. Personal Examples
- Sharing exam questions in advance would be a serious breach of trust as a teacher→ Students and institutions expect fairness and confidentiality.
- When practising English online, I avoid copying answers because that would breach academic honesty→ Learning loses its value if rules are violated.
6. Register: Formal / Neutral
✔ Native usage tips
- Breach sounds serious and is common in legal, professional, and news contexts
- For small mistakes, natives prefer “break” rather than “breach”
- Data breach is now a fixed, everyday expression in tech and media
✔ Similar expressions / words
- violation → breaking a rule or law (very close in meaning)
- break → more general and informal than “breach”
- infringement → formal, often used in legal or rights-related contexts
- betrayal → emotional version of a breach of trust
- compromise → weaken security or integrity rather than openly breach it
