Definition of rearguard action noun from the Oxford Advanced Learner's Dictionary


rearguard action

BrE BrE//ˌrɪəɡɑːd ˈækʃn//
; NAmE NAmE//ˌrɪrɡɑːrd ˈækʃn//
[usually singular]
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a struggle to change or stop something even when it is not likely that you will succeed They have been fighting a rearguard action for two years to stop their house being demolished.
See the Oxford Advanced American Dictionary entry: rearguard action