• vt. 警告，提醒；通知
• vi. 發出警告，發出預告
• n. (Warn)人名；(英)沃恩；(德)瓦恩

來自PIE*wer,覆蓋，保護，看管，看護，詞源同ward,ware。引申詞義提醒，警告。詞義演變比較monster,admonish.

warn

warn: [OE] Warn, and its German relative warnen, go back to a prehistoric West Germanic *warnōjan. This was formed from the base *war- ‘watch, be on one’s guard, take care’, which also produced English ward, ware, wary, etc. Germanic *warnjan, which evidently had close links with *warnōjan, was borrowed into French, and surfaced in English as garnish.
=> garnish, ward, ware, wary

warn (v.)

Old English warnian "to give notice of impending danger," also intransitive, "to take heed," from Proto-Germanic *warnon (cognates: Old Norse varna "to admonish," Old High German warnon "to take heed," German warnen "to warn"), from PIE *wer- (5) "to cover" (see weir). Related: Warned; warning.

1. He spends his spare time visiting schools to warn pupils off drugs.

他用自己的業余時間訪問學校，告誡小學生遠離毒品。

來自柯林斯例句

2. Signs across the entrances warn all visitors to stub out their cigarettes.

入口處的告示牌提醒游客們熄滅香煙。

來自柯林斯例句

3. Lawrence kept on butting me but the referee did not warn him.

勞倫斯不停地用頭撞我，但是裁判并沒有警告他。

來自柯林斯例句

4. I must warn you against raising your hopes.

我必須警告你不要期望過高。

來自柯林斯例句

5. Analysts warn us away from drawing any conclusions.

分析家勸告我們不要妄下結論。

來自柯林斯例句