When a complicated project needs quick decisions, fools rush in and make things worse.

The fossil fools disrupted the climate summit with slogans denying the science.

She fools about during meetings, which frustrates her colleagues.

Many April fools were embarrassed when the harmless prank went too far.

April fools! I swapped the sugar for salt this morning and couldn't stop laughing when you took that huge sip.

She April-fools everyone with an elaborate prank each year.

He sent me on a series of fools' errands that wasted my whole afternoon.

The flannelled fools cheered as the autumn parade went by, their plaid shirts flapping in the wind.

They may be young, but they're nobody's fools when it comes to managing money.

Even after the scandal, the trustees insisted they were no one's fools and would protect the charity's funds.