Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZphysical libration
noun
: the oscillation of the moon's body with respect to the earth caused by gravitational stresses on the former's unsymmetrical shape
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Merriam-Webster unabridged
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- Before we went to her house, Hannah told us her aunt was a flibbertigibbet.


Can you make 12 words with 7 letters?
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