Cách sử dụng
The word 'folly' refers to a foolish or senseless act or decision. It can also mean something that is impractical, wasteful, or unwise. You can use this word to describe someone's behavior or action that seems silly or illogical. For example, "It was a folly to invest in that company without proper research" or "It was a folly to go out in the storm without an umbrella." It is usually used in a negative context to criticize the actions of someone.