He fool-heartedly quit his steady job without having another offer lined up.

While foraging, she nearly picked fool's parsley, mistaking the poisonous Aethusa cynapium for edible herbs.

The motley fool danced across the great hall, making the noble guests forget their worries.

She tended to fool away her inheritance on gambling and flashy parties.

They fooled around with the outdated software until their boss noticed.

Many tournament losses are caused by overlooked fool's mates.

Even after the oil spill, he still acted like a fossil fool, insisting on driving his gas-guzzler every day.

Don't try to con her; she's nobody's fool.

As a seasoned negotiator, Maya knew she was no one's fool.

Despite every warning, the fool-hearted traveler set off alone across the frozen moor.