vital: [14] Vital comes via Old French vital from Latin vītālis. This was a derivative of vīta ‘life’. And vīta went back ultimately to Latin vīvus ‘living’, source of English vivacious, vivid, etc. Viable [19] is also descended from vīta, and etymologically means ‘capable of life’. => viable, vitamin, vivid
vital (adj.)
late 14c., "of or manifesting life," from Latin vitalis "of or belonging to life," from vita "life," related to vivere "to live," from PIE root *gweie- (1) "to live" (see bio-). The sense of "necessary or important" is from 1610s, via the notion of "essential to life" (late 15c.). Vital capacity recorded from 1852. Related: Vitally.
例文
1. The vital clue to the killer 's identity was his nickname，Peanuts.
殺し屋の身元を明らかにする重要な手がかりは、彼のあだ名「落花生」である。
2.Officials failed to pass vital information to their superiors.
役人たちは重要な情報を上司に報告していない。
3.Support from those closest to you is vital in these trying times.
これらの困難な時に、最も親しい人があなたをサポートすることは重要です。
4.His function is vital to the accomplishment of the agency 's mission.
この機関の使命を果たすには、彼の役割が重要である。
5.They believed ancient Greece and Rome were vital sources of learning.