Deceiving or tricking someone; playing tricks; acting silly or not seriously.
From 'fool' (Old French 'fol,' from Latin 'follis' meaning 'bellows' or 'empty-headed person'). The verb 'to fool' developed from the noun, and the '-ing' suffix creates the gerund or present participle form, indicating the ongoing action of deceiving or acting foolishly.
The word 'fool' originally referred to someone who was literally empty-headed—from the Latin 'follis' (bellows)! Medieval courts actually employed 'fools' or jesters because foolish behavior was seen as having a kind of wisdom, which is why we still have the saying 'there's truth in jest.'
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