What does breach mean?
A breach is a breaking — of rules, promises, defences, or physical barriers. Most commonly, the word describes a violation of a law, contract, duty, or code of conduct, as in a breach of contract or a breach of privacy, and it carries strongly negative connotations because it signals a failure of trust or obligation. In its older and more literal sense, a breach is a gap torn in something solid: armies once 'breached' city walls with cannon fire, and engineers still speak of floodwaters breaching a dam or levee. The word works as both noun and verb — one can commit a breach or breach an agreement directly. It derives from the same ancient Germanic root as the everyday word 'break,' and shares distant kinship with Latin-derived terms like fracture and fragment. Because modern life runs on contracts, systems, and data, 'breach' has become an essential word in law, cybersecurity, journalism, and everyday professional speech alike.
An act of breaking or failing to observe a law, agreement, or standard of behaviour; also a gap or rupture in a physical barrier.
"Publishing the memo was a clear breach of confidentiality."
In legal contexts, 'breach of contract' and 'breach of duty' are fixed technical terms.
To make a hole or gap in a barrier, or to violate a law, agreement, or duty.
"Protesters breached the outer fence of the compound."
Standard plural; used both for multiple violations ('several breaches of protocol') and multiple physical gaps ('breaches in the sea wall').
"The audit uncovered repeated breaches of safety regulations."
Breach and break come from the very same ancient root — every time you say 'breach of contract,' you're literally saying 'break of contract.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of breach
Breach entered Middle English around the thirteenth century from Old French 'breche,' meaning a gap or opening, which itself came from a Germanic source related to Old English 'brecan,' meaning to break. It thus traces back ultimately to the Proto-Indo-European root *bhreg-, meaning to break, which also produced the native English verb 'break.' Distant cousins include the Latin-derived words fracture, fragment, and frail, all descended from the same ancient root via Latin 'frangere.'
Related word forms
How breach is actually used
Breach carries formal and often negative connotations, appearing frequently in legal, corporate, and military contexts. It implies a serious failure of trust or duty rather than an innocent mistake. The verb is standard and transitive: you breach a contract, a wall, or a perimeter.
Easily confused with breach
Breech refers to the rear or lower part of something (as in breech birth or the breech of a gun), while breach means a violation or breaking-through.