• n. 根據；證明；正當理由；委任狀
• vt. 保證；擔保；批準；辯解

來自PIE*wer,覆蓋，保護，看管，看護，詞源同ward,ware。引申詞義擔保，授權。

warrant

warrant: [13] Warrant probably goes back ultimately to werenti ‘protector’, a noun use of the present participle of Old High German werren ‘protect’, which in turn was formed from the base *wer- ‘watch, be on one’s guard, take care’ (source of English ward, wary, etc). This was borrowed into medieval Latin as warantus, and passed into English via Old Northern French warant. The central Old French form of the word was garant, which passed into English via Spanish as guarantee.
=> guarantee, ware

warrant (n.)

c. 1200, "protector, defender," from Old North French warant "defender; surety, pledge; justifying evidence" (Old French garant), from Frankish *warand, from Proto-Germanic *war- "to warn, guard, protect" (cognates: Old High German werento "guarantor," noun use of present participle of weren "to authorize, warrant;" German gew?hren "to grant"), from PIE root *wer- (5) "to cover" (see weir).

Sense evolved via notion of "permission from a superior which protects one from blame or responsibility" (early 14c.) to "document conveying authority" (1510s). A warrant officer in the military is one who holds office by warrant (as from a government department), rather than by commission (from a head of state).

warrant (v.)

late 13c., "to keep safe from danger," from Old North French warantir "safeguard, protect; guarantee, pledge" (Old French garantir), from warant (see warrant (n.)). Meaning "to guarantee to be of quality" is attested from late 14c.; sense of "to guarantee as true" is recorded from c. 1300. Related: Warranted; warranting; warrantable.

1. The allegations are serious enough to warrant an investigation.

這些指控很嚴重，有必要進行一番調查。

來自柯林斯例句

2. Officers armed with a search warrant entered the flat.

警察們持搜查證進入了那所公寓。

來自柯林斯例句

3. By accusing the King of murder, he signed his own death warrant.

他指控國王謀殺，從而讓自己走上了絕路。

來自柯林斯例句

4. No matter was too small to warrant his attention.

再小的事也會引起他的注意。

來自柯林斯例句

5. All entrants must warrant that their entry is entirely their own work.

所有參賽者必須保證其參賽作品完全是自己創作的。

來自柯林斯例句