Foolish Behaviors

adjective showing a lack of good sense or judgment; silly or unwise

• It would be foolish to invest all your money in one risky stock.
• Don't be foolish and try to swim in that rough ocean.
• She's acting so foolish, thinking she can outsmart everyone.
• His decision to quit his stable job without a backup plan was quite foolish.

noun the quality or state of being foolish; lack of good sense or judgment

• The decision to invest all his savings in a risky venture showed his foolishness.
• Her foolishness in believing everything she read online led to many mistakes.
• I can't believe the level of foolishness he displayed by trying to jump off the roof.
• The foolishness of trying to control everything in life became clear to her as she learned to let go.