as in flibbertigibbets
a silly flighty person
in a medical situation of this seriousness we don't need some rattlebrain running around in a panic
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“Rattlebrains.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/rattlebrains. Accessed 18 Dec. 2024.
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