The meaning of FOLLY is lack of good sense or normal prudence and foresight. How to use folly in a sentence.

In architecture, a folly is a building constructed primarily for decoration, but suggesting through its appearance some other purpose, or of such extravagant appearance that it transcends the range of …

She said that the idea was folly. [ + to infinitive ] It would be folly for the country to become involved in the war.

Definition of folly noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

folly (ˈfɒlɪ) n, pl -lies 1. the state or quality of being foolish; stupidity; rashness 2. a foolish action, mistake, idea, etc

Dec 2, 2025 · Foolishness that results from a lack of foresight or lack of practicality. It would be folly to walk all that way, knowing the shops are probably shut by now. The purchase of Alaska from Russia …

If you say that a particular action or way of behaving is folly or a folly, you mean that it is foolish. It's sheer folly to build nuclear power stations in a country that has dozens of earthquakes every year. …

fol•ly (fol′ ē), n., pl. -lies for 2–6. lack of understanding or sense. absurdity: the folly of performing without a rehearsal. unwise investment or expenditure.

FOLLY definition: the state or quality of being foolish; lack of understanding or sense. See examples of folly used in a sentence.

Oct 3, 2023 · The fool begins his talking on the wrong basis—he's talking folly to start with; and the end of it, well, it is madness, borderline insanity.