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Definition of Rattlebrained
1. Adjective. Lacking sense or discretion. "How rattlepated I am! I've forgotten what I came for" 
Definition of Rattlebrained
1. a. Giddy; rattle-headed.
Definition of Rattlebrained
1. [adj]
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1. Adjective. Lacking sense or discretion. "How rattlepated I am! I've forgotten what I came for" 
1. a. Giddy; rattle-headed.
1. [adj]