Main Entry:

fol·ly

Pronunciation:

\ˈfä-lē\

Function:

noun

Inflected Form(s):

plural follies

Etymology:

Middle English folie, from Anglo-French, from fol fool

Date:

13th century

1: lack of good sense or normal prudence and foresight2 a: criminally or tragically foolish actions or conduct bobsolete : evil, wickedness ; especially : lewd behavior3: a foolish act or idea4: an excessively costly or unprofitable undertaking5: an often extravagant picturesque building erected to suit a fanciful taste