pre-empt
Pronunciation: /priˈɛmpt/
verb
- 1take action in order to prevent (an anticipated event) happening; forestall: the government pre-empted a coup attempt
- act in advance of (someone) in order to prevent them doing something: it looked as if she’d ask him more, but Parr pre-empted her

Origin:
mid 19th century: back-formation from pre-emption