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English definition of “scatterbrain”

scatterbrain

noun [C] uk   /ˈskæt.ə.breɪn/ us    /ˈskæt̬.ɚ-/
a person who forgets things easily or does not think seriously about things: I'm such a scatterbrain - I'm always leaving my umbrella behind.Stupid and silly people
scatterbrained
adjective uk   /-breɪnd/ us  
Forgetting and forgetfulness
(Definition of scatterbrain from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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