indispensable

Từ điển Oxford Advanced Learner 8th

in·dis·pens·able BrE [ˌɪndɪˈspensəbl] NAmE [ˌɪndɪˈspensəbl] adjective
too important to be without
Syn: ↑essential
•Cars have become an indispensable part of our lives.
•~ to sb/sth She made herself indispensable to the department.
•~ for sth/for doing sth A good dictionary is indispensable for learning a foreign language.
Opp: ↑dispensable

Word Origin:
[indispensable] mid 16th cent. (in the sense ‘not to be allowed or provided for by ecclesiastical dispensation’): from medieval Latin indispensabilis, from in- ‘not’ + dispensabilis (from Latin dispensare ‘continue to weigh out or disburse’, from the verb dispendere, based on pendere ‘weigh’).

Language Bank:
vital
Saying that something is necessary
It is vital that ▪ journalists can verify the accuracy of their reports.
▪ Journalists play a vital ▪ / crucial ▪ role in educating the public.
▪ Public trust is a crucial ▪ issue for all news organizations.
▪ The ability to write well is essential ▪ for any journalist.
▪ The Internet has become an indispensable ▪ tool for reporters.
▪ In journalism, accuracy is paramount ▪. / …is of paramount importance ▪.
It is imperative that ▪ journalists maintain the highest possible standards of reporting.
Synonyms at ↑essential
Language Banks at ↑emphasis, ↑impersonal

Example Bank:
•These drugs are almost indispensable in the fight against the disease.
•Written sources are considered absolutely indispensable for today's history teaching.
•skills which turned out to be indispensable to her career
•She made herself virtually indispensable to the department.