what's (all) this/that in aid of?
idiom
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."
Cite this Entry
“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 27 Nov. 2025.
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Merriam-Webster unabridged
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