fool

• vi. だます；冗談を言う；からかう
• n. 愚か者；欺く者
• vt.だます；だます
• adj. 愚かな

ラテン語のfollis、ふいご、革袋から、語源的にはふいご同様。 具体的には鍛冶屋のふいごだが、後に自慢屋、馬鹿者、愚か者などの意味に派生した。

fool

fool: [13] Fool comes via Old French fol from Latin follis, which originally meant ‘bellows’ (and may come ultimately from Indo-European *bhel-, which produced English bellows). In post-classical times it developed semantically via ‘windbag’ and ‘fatuous person’ to ‘idiot’. Fool ‘dessert of puréed fruit and cream’ [16] appears to be the same word, applied (like trifle) to a light insubstantial dessert. Folly [13] comes from the Old French derivative folie.
=> folly

fool (n.1)

early 13c., "silly, stupid, or ignorant person," from Old French fol "madman, insane person; idiot; rogue; jester," also "blacksmith's bellows," also an adjective meaning "mad, insane" (12c., Modern French fou), from Medieval Latin follus (adj.) "foolish," from Latin follis "bellows, leather bag" (see follicle).

The sense evolution probably is from Vulgar Latin use of follis in a sense of "windbag, empty-headed person." Compare also Sanskrit vatula- "insane," literally "windy, inflated with wind." But some sources suggest evolution from Latin folles "puffed cheeks" (of a buffoon), a secondary sense from plural of follis. One makes the "idiot" sense original, the other the "jester" sense.

The word has in mod.Eng. a much stronger sense than it had at an earlier period; it has now an implication of insulting contempt which does not in the same degree belong to any of its synonyms, or to the derivative foolish. [OED]

Also used in Middle English for "sinner, rascal, impious person" (late 13c.). Meaning "jester, court clown" in English is attested c. 1300, though it is not always possible to tell whether the reference is to a professional entertainer counterfeiting mental weakness or an amusing lunatic, and the notion of the fool sage whose sayings are ironically wise is also in English from c. 1300. The French word probably also got into English via its borrowing in the Scandinavian languages of the vikings (Old Norse fol, Old Danish fool, fol).

There is no foole to the olde foole ["Proverbs of John Heywood," 1546]

To make a fool of (someone) "cause to appear ridiculous" is from 1620s (make fool "to deceive, make (someone) appear a fool" is from early 15c.). Feast of Fools (early 14c., from Medieval Latin festum stultorum) was the burlesque festival celebrated in some churches on New Year's Day in medieval times. Fool's gold "iron pyrite" is from 1829. Fool's paradise "illusory state of happiness" is from mid-15c. Fool-trap is from 1690s. Foolosopher, a useful insult, is in a 1549 translation of Erasmus. Fool's ballocks is described in OED as "an old name" for the green-winged orchid. Fool-killer "imaginary personage invested with authority to put to death anybody notoriously guilty of great folly" is from 1851, American English.

Fool killer, a great American myth imagined by editors, who feign that his or its services are greatly needed, and frequently alluded to as being "around" or "in town" when some special act of folly calls for castigation. Whether the fool-killer be an individual or an instrument cannot always be gathered from the dark phraseology in which he or it is alluded to; but the weight of authority would sanction the impersonal interpretation. [Walsh, "Handy-Book of Literary Curiosities," 1892]

fool (v.)

mid-14c., "to be foolish, act the fool," from fool (n.1). The transitive meaning "make a fool of" is recorded from 1590s. Sense of "beguile, cheat" is from 1640s. Also as a verb 16c.-17c. was foolify. Related: Fooled; fooling. Fool around is 1875 in the sense of "pass time idly," 1970s in sense of "have sexual adventures."

fool (adj.)

c. 1200, "sinful, wicked; lecherous" (a fool woman (c. 1300) was "a prostitute"), from fool (n.1). Meaning "foolish, silly" is mid-13c. In modern use considered U.S. colloquial.

fool (n.2)

type of custard dish, 1590s, of uncertain origin. The food also was called trifle, which may be the source of the name (via verb and noun senses of fool). OED utterly rejects derivation from Old French fole "a pressing."

1. People always think I 'm a fool ，and I dare say they 're right.

人々は私をバカだと思っているが、彼らは正しいだろう。

2.I 'd been a fool letting him snow me with his big ideas.

私は愚かで、彼のでたらめな吹聴にだまされてしまった。

3.I was a fool to have let her talk me into.

私は愚かで、彼女の説得に耳を傾けた。

4.He has simply been exposed as an adulterer and a fool .

彼が奸夫であり馬鹿であることを暴く人がいる。

5.He 'd been a fool to get involved with her！

彼は彼女と話をしたなんて、バカだ！