- One who is deficient in judgment, sense, or understanding. (noun)
- One who acts unwisely on a given occasion: I was a fool to have quit my job. (noun)
- One who has been tricked or made to appear ridiculous; a dupe: They made a fool of me by pretending I had won. (noun)
- Informal A person with a talent or enthusiasm for a certain activity: a dancing fool; a fool for skiing. (noun)
- A member of a royal or noble household who provided entertainment, as with jokes or antics; a jester. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.