Breach vs. Breech
The words sound alike but have unrelated core meanings. Choose by meaning rather than pronunciation, and keep specialized contexts at the vocabulary level unless domain-specific guidance is actually required.
Use “breach” for a violation, break, or opening. Use “breech” for specialized rear/lower-part senses, including the rear part of certain mechanisms and the lower-part-first position described in childbirth terminology.
Key details
Choose the right form
| Meaning / context | Use | Decision |
|---|---|---|
| violation of an agreement, duty, rule, or relationship | breach | Use the b-r-e-a-c-h spelling. |
| gap, break, or opening | breach | The same spelling covers this physical sense. |
| rear/lower-part specialized sense | breech | Use b-r-e-e-c-h for the specialized noun/adjective senses. |
Quick tests
Decision test
Do you mean a violation, break, gap, or opening?
If yes: Use “breach.”
If no: If you mean one of the specialized rear/lower-part senses, use “breech.”
Caveat: Choose by meaning, not sound. This vocabulary distinction does not provide medical, legal, engineering, or weapons advice.
Examples
The company reported a breach of the agreement.
“Breach” is used for a violation or break.
Workers repaired the breach in the wall.
“Breach” can also mean an opening or gap.
The glossary uses “breech” for the specialized rear-part term.
“Breech” belongs to specialized rear/lower-part senses rather than the violation meaning.
Further guidance
Core difference
Use the b-r-e-a-c-h spelling.
Fast Test
Use “breach.” If you mean one of the specialized rear/lower-part senses, use “breech.”
Usage Boundary
Choose by meaning, not sound. This vocabulary distinction does not provide medical, legal, engineering, or weapons advice.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- breach (opens in a new tab)Cambridge University Press · Breach denotes a violation/break of a law, promise, agreement, or relationship, and can also mean an opening or gap.
- breech (opens in a new tab)Oxford University Press · Breech as a noun denotes the back part of a gun where ammunition is loaded; Cambridge additionally records breech for lower-part-first fetal/birth position.