fa·tu·ity /fəˈtuəti, fæ, ˈʧu, ˈtju-/
愚鈍,昏庸,愚蠢的言行
Fa·tu·i·ty n. Weakness or imbecility of mind; stupidity.
Those many forms of popular fatuity. --I Taylor.
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fatuity
n : a ludicrous folly; "the crowd laughed at the absurdity of
the clown's behavior" [syn: absurdity, fatuousness, silliness]