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English definition of “use your head”

use your head

(UK old-fashioned informal use your loaf)
used to tell someone in a slightly angry way to think more carefully about what they are doing: Why didn't you use your head and cover the furniture before you started painting?Thinking and contemplating
(Definition of use your head from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “use your head”

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