Brain-trust meaning

A group of experts who serve, usually unofficially, as advisers and policy planners, especially in a government.
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A group of experts unofficially acting as administrative advisers.
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(chiefly US) Originally, a group of experts who advise a government, often informally.
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More recently, any group of experts assembled to give advice.
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Origin of brain-trust

  • Originally a group of academics who advised President Franklin D. Roosevelt.
    From Wiktionary