- 1breach something to not keep to an agreement or not keep a promise synonym break The government is accused of breaching the terms of the treaty. A doctor was sacked for allegedly breaching patient confidentiality. The proposed changes breached trade union rules.
- 2breach something to make a hole in a wall, fence, etc. so that somebody/something can go through it The dam had been breached. Demonstrators breached police lines around the embassy. Word Origin Middle English: from Old French breche, ultimately of Germanic origin; related to break.
BrE BrE//briːtʃ//; NAmE NAmE//briːtʃ//(formal)Verb Forms present simple I / you / we / they breach
BrE BrE//briːtʃ//; NAmE NAmE//briːtʃ//he / she / it breaches
BrE BrE//ˈbriːtʃɪz//; NAmE NAmE//ˈbriːtʃɪz//past simple breached
BrE BrE//briːtʃt//; NAmE NAmE//briːtʃt//past participle breached
BrE BrE//briːtʃt//; NAmE NAmE//briːtʃt//-ing form breaching
BrE BrE//ˈbriːtʃɪŋ//; NAmE NAmE//ˈbriːtʃɪŋ//