Folly1. (n.) The state of being foolish; want of good sense; levity, weakness, or derangement of mind.
2. (n.) A foolish act; an inconsiderate or thoughtless procedure; weak or light-minded conduct; foolery.
3. (n.) Scandalous crime; sin; specifically, as applied to a woman, wantonness.
4. (n.) The result of a foolish action or enterprise.
Thesaurus Entries
absurdity, absurdness, act of folly, asininity, battiness, blunder, brainlessness, buffoonery, clownishness, crackpottedness, crankiness, craziness, daffiness, daftness, desipience, dottiness, dumb trick, dumbness, eccentricity, error, fatuity, fatuousness, faux pas, fluff, foolery, foolheadedness, foolishness, frivolity, frivolousness, gaffe, giddiness, goof, goofiness, idiocy, imbecility, imprudence, inanity, indiscretion, ineptitude, insanity, irrationality, kookiness, lunacy, madness, mindlessness, mistake, niaiserie, nonsense, nugacity, nuttiness, obtuseness, preposterousness, queerness, rashness, sappiness, screwiness, senselessness, silliness, sottise, stolidity, stolidness, stupid thing, stupidity, thoughtlessness, triflingness, triviality, unwise step, wackiness, weak-mindedness, weirdness, witlessness, zaniness, zanyism