Republican National Committee Chairman Michael Steele ignited the furor by disavowing the war as President Obama's folly.
Most Democratic presidents – and perhaps secretly even George H.W. Bush – have understood the folly of U.S. policy toward Cuba.
Either way, Israel's nuclear monopoly will be busted; siding with more weapons over none seems like folly.
All too often, the march of folly has been bicameral, as well as bipartisan.
One recognizes the folly of supply side; the other wants to double down on supply side.
Now my desires were complied with, and it would, indeed, have been folly to repent.
Now Frank showed him the folly of such a step, and Frank knew about things.
Have you not spent a lifetime of regret to atone for a moment of folly?
I joined them in a moment of folly, to protect a friend whom I knew to be one.
And again he wondered that Miss Bailey should waste her time—and his—in folly.
early 13c., "mental weakness; unwise conduct" (in Middle English including wickedness, lewdness, madness), from Old French folie (12c.) "folly, madness, stupidity," from fol (see fool (n.)). Sense of "costly structure considered to have shown folly in the builder" is attested from 1650s. Used since Middle English of place names, especially country estates, as a form of Old French folie in its meaning "delight." Meaning "glamorous theatrical revue with lots of pretty girls" is from 1880, from French.