- 1backdate something to write a date on a cheque or other document that is earlier than the actual date compare post-date
- 2backdate something (British English) to make something, especially a payment, take effect from an earlier date Postal workers are getting a 5.2% pay rise, backdated to February.
BrE BrE//ˌbækˈdeɪt//; NAmE NAmE//ˌbækˈdeɪt//Verb Forms present simple I / you / we / they backdate
BrE BrE//ˌbækˈdeɪt//; NAmE NAmE//ˌbækˈdeɪt//he / she / it backdates
BrE BrE//ˌbækˈdeɪts//; NAmE NAmE//ˌbækˈdeɪts//past simple backdated
BrE BrE//ˌbækˈdeɪtɪd//; NAmE NAmE//ˌbækˈdeɪtɪd//past participle backdated
BrE BrE//ˌbækˈdeɪtɪd//; NAmE NAmE//ˌbækˈdeɪtɪd//-ing form backdating
BrE BrE//ˌbækˈdeɪtɪŋ//; NAmE NAmE//ˌbækˈdeɪtɪŋ//