(chess) The quickest possible checkmate in the game of chess.

Foolishly; in a foolhardy manner.

plural of fool-saint

(set phrase) A person who is not easily deceived or victimized; one who is perceptive, clever, or thoroughly common-sensical.

(derogatory, slang) One who uses fossil fuels without concern for their environmental impact.

Synonym of nobody's fool

A philosophy of life, holding that people who do not look for an easy way of earning a living are foolish.

An imaginary personage said to like everything that is good, and plenty of it.

Alternative spelling of April Fools' Day

(economics) Theory that the price of an object is determined by irrational beliefs and expectations of market participants, rather than intrinsic value; i.e. that one can make money by buying something for the sole reason of selling it to some one else for a higher price.