# proof

英 [pruːf]
美[pruf]

- n. 证明；证据；校样；考验；验证；试验
- adj. 防…的；不能透入的；证明用的；耐…的
- vt. 试验；校对；使不被穿透

### 词态变化

复数:

**proofs**;第三人称单数:**proofs**;过去式:**proofed**;过去分词:**proofed**;现在分词:**proofing**;### 中文词源

proof 证据，证明，检查，验样

来自prove的名词形式，拼写比较believe,belief.

### 英文词源

- proof
**proof:**[13]*Proof*and*prove*are of course closely related. Both go back ultimately to Latin*probāre*‘test, prove’. From this in post-classical times was derived the noun*proba*‘proof’, which passed into English via Old French*preve*as*pref*. In the 14th and 15th centuries this gradually changed in the mainstream language to*proof*, due to the influence of the verb*prove*.

=> probe, prove- proof (n.)
- early 13c., preove "evidence to establish the fact of (something)," from Anglo-French preove, Old French prueve "proof, test, experience" (13c., Modern French preuve), from Late Latin proba "a proof," a back-formation from Latin probare "to prove" (see prove). "The devocalization of v to f ensued upon the loss of final e; cf. the relation of v and f in believe, belief, relieve, relief, behove, behoof, etc. [OED].

Meaning "act of proving" is early 14c. Meaning "act of testing or making trial of anything" is from late 14c., from influence of prove. Meaning "standard of strength of distilled liquor" is from 1705. In photography from 1855. Typographical sense of "trial impression to test type" is from c. 1600. Numismatic sense of "coin struck to test a die" is from 1762; now mostly in reference to coins struck from highly polished dies, mainly for collectors.

Adjectival sense (proof against) is recorded from 1590s, from the noun in expressions such as proof of (mid-15c.), hence extended senses involving "tested power" in compounds such as fireproof (1630s), waterproof (1725), foolproof (1902), etc. Shakespeare has shame-proof. Expression the proof is in the pudding (1915) is a curious perversion of earlier proof of the pudding is in the eating (1708), with proof in the sense "quality of proving good or turning out well" (17c.); perhaps an advertiser's condensed form of the original. - proof (v.)
- 1834, "to test," from proof (n.). From 1950 as short for proofread (v.). Related: Proofed; proofing.

### 双语例句

- 1. He has had to eat his words about the company being recession-
**proof**. - 他不得不收回他说过的公司能免受经济衰退影响的话。

来自柯林斯例句

- 2. His papers were
**proof**against all but the most expert of scrutinies. - 他的论文几乎可以经受住最专业的审查。

来自柯林斯例句

- 3. Training is worthless unless there is
**proof**that it works. - 除非能证明训练有效，否则就是白搭。

来自柯林斯例句

- 4. His life was saved by a quarter-inch-thick bullet-
**proof**steel screen. - 多亏一块1/4英寸厚的防弹钢板，他才捡了条命。

来自柯林斯例句

- 5. "We need
**proof**, sir." Another pause. Then, "Very well." - “我们需要证据，先生。”又是一个短暂停顿。然后，“那好吧。”

来自柯林斯例句