folly

folly
(pl. -ies)

[mass noun]lack of good sense; foolishness
愚笨，愚蠢
an act of sheer folly.
绝对愚蠢之举。
■[count noun]a foolish act, idea, or practice
蠢行，傻念头，蠢事
the follies of youth.
青年人的傻事。
a costly ornamental building with no practical purpose, especially a tower or mock-Gothic ruin built in a large garden or park
巨资兴建的无用建筑，华而不实的建筑（尤指大花园或公园中的塔或仿哥特式遗迹）
(Follies)a theatrical revue with glamorous female performers
（迷人女演员表演的）时事讽刺剧
[in names]the Ziegfeld Follies.
齐格菲尔德时事讽刺剧。

语源

Middle English: from Old French folie 'madness', in modern French also 'delight, favourite dwelling' (compare with sense 2), from fol 'fool, foolish'