Despite warnings from his friends, his foolhardihood drove him to attempt the dangerous climb alone.

Even the smartest people are sometimes foolable when they're tired.

His foolhardice during the storm endangered the entire crew.

Taking the unlit path at midnight proved foolhardier than the group had expected.

The foolhardiest climber in the group ignored the storm warnings and continued upward.

The committee had had enough of his repeated fooleries and finally voted to remove him.

Their penny wise and pound foolish decision to skimp on routine maintenance saved a few dollars now but resulted in a much more expensive repair later.

Over the years, he learned from his many foolishnesses and became a wiser person.

Despite repeated warnings, his foolhardinesses endangered the entire crew.

Many anthropologists study the customs of the Foolah in West Africa.