- 1[intransitive, transitive] if something overturns, or if somebody overturns it, it turns upside down or on its side The car skidded and overturned. overturn something He stood up quickly, overturning his chair.
- 2[transitive] overturn something to officially decide that a legal decision, etc. is not correct, and to make it no longer valid to overturn a decision/conviction/verdict His sentence was overturned by the appeal court. See related entries: Legal processes Extra examples She completely overturned my preconceptions about film stars. This argument seems convincing, but is easily overturned. He hopes that councillors will overturn the decision.
BrE BrE//ˌəʊvəˈtɜːn//; NAmE NAmE//ˌoʊvərˈtɜːrn//Verb Forms present simple I / you / we / they overturn
BrE BrE//ˌəʊvəˈtɜːn//; NAmE NAmE//ˌoʊvərˈtɜːrn//he / she / it overturns
BrE BrE//ˌəʊvəˈtɜːnz//; NAmE NAmE//ˌoʊvərˈtɜːrnz//past simple overturned
BrE BrE//ˌəʊvəˈtɜːnd//; NAmE NAmE//ˌoʊvərˈtɜːrnd//past participle overturned
BrE BrE//ˌəʊvəˈtɜːnd//; NAmE NAmE//ˌoʊvərˈtɜːrnd//-ing form overturning
BrE BrE//ˌəʊvəˈtɜːnɪŋ//; NAmE NAmE//ˌoʊvərˈtɜːrnɪŋ//Legal processes