indispensable
adjective /ˌɪndɪˈspensəbl/
  /ˌɪndɪˈspensəbl/
- too important to be without synonym essential
- Cars have become an indispensable part of our lives.
 - indispensable to somebody/something She made herself indispensable to the department.
 - indispensable for something/for doing something A good dictionary is indispensable for learning a foreign language.
 
Synonyms essentialessential- vital
 - crucial
 - critical
 - decisive
 - indispensable
 
- essential extremely important and completely necessary, because without it something cannot exist, be made or be successful:
- Experience is essential for this job.
 
 - vital essential:
- The police play a vital role in our society.
 
 
- crucial extremely important because a particular situation or activity depends on it:
- It is crucial that we get this right.
 
 - critical extremely important because a particular situation or activity depends on it:
- Your decision is critical to our future.
 
 
- decisive of the greatest importance in affecting the final result of a particular situation:
- She has played a decisive role in the peace negotiations.
 
 - indispensable essential; too important to be without:
- Cars have become an indispensable part of our lives.
 
 
- essential/vital/crucial/critical/decisive/indispensable for something
 - essential/vital/crucial/critical/indispensable to something
 - essential/vital/crucial/critical that…
 - essential/vital/crucial/critical to do something
 - a(n) essential/vital/crucial/critical/decisive/indispensable part/factor
 - of vital/crucial/critical/decisive importance
 - absolutely essential/vital/crucial/critical/decisive/indispensable
 
Language Bank vitalvitalSaying 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.
 
Extra Examples- These drugs are almost indispensable in the fight against the disease.
 - Written sources are considered absolutely indispensable for today's history teaching.
 
Oxford Collocations Dictionaryverbs- be
 - prove
 - become
 - …
 
- absolutely
 
- for
 - in
 - to
 - …
 
Word Originmid 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’).