Definition of "tomfoolery" [tom•fool•er•y]

• Foolish behavior. (noun)
• Something trivial or foolish; nonsense. (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.

• "She made fun of what she called his tomfoolery, which prevented him from turning his position to account."
• "Five millennia of economic tomfoolery is bound to leave Egyptians confused about economic principles."
• "Whatever we get in November, it least it won't be Billary and this kind of tomfoolery!"