Having the heart of a fool; foolish.

Aethusa cynapium, an annual umbelliferous plant that resembles parsley but is poisonous.

plural of fossil fool

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

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

Synonym of nobody's fool

Third-person singular simple present indicative form of play the fool

plural of Feast of Fools

plural of flannelled fool

plural of fool-saint