transitive verb
Definition 1
Frustrate, cross (wish, purpose).
Source: Concise Oxford Dictionary
Context: TCI, with $9.5bn under management, made its name as an activist fund when it thwarted Deutsche Börse's £1.4bn ($2.1bn) bid for the London Stock Exchange in 2005.
Source: Financial Times 16/04/2009 (Michiyo Nakamoto in Tokyo)