Folly /(?)/

pl. Follies

1. The state of being foolish; want of good sense; levity, weakness, or derangement of mind.
2. A foolish act; an inconsiderate or thoughtless procedure; weak or light-minded conduct; foolery.

   What folly 'tis to hazard life for ill.

3. Scandalous crime; sin; specifically, as applied to a woman, wantonness.

   [Achan] wrought folly in Israel.

   When lovely woman stoops to folly.

4. The result of a foolish action or enterprise.

   It is called this man's or that man's “folly,” and name of the foolish builder is thus kept alive for long after years.