what's (all) this/that in aid of?

idiom

Definition of what's (all) this/that in aid of?

British, informal
used to ask about the purpose of something "What's all this rushing about in aid of, then?" "We're trying to get things ready for the boss's visit."

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“What's (all) this/that in aid of?.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/what%27s%20%28all%29%20this%2Fthat%20in%20aid%20of%3F. Accessed 18 Jun. 2021.

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