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Definition of brain surgery noun from the Oxford Advanced Learner's Dictionary

brain surgery

noun

/ˈbreɪn sɜːdʒəri/

/ˈbreɪn sɜːrdʒəri/

[uncountable]Idioms

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Idioms

it’s not brain surgery

(informal) used to emphasize that something is easy to do or understand synonym rocket science
- Look, this isn't brain surgery we're doing here.
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See brain surgery in the Oxford Advanced American Dictionary

Check pronunciation: brain surgery

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verb

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