indispensable

 
Pronunciation: /ɪndɪˈspɛnsəb(ə)l/

adjective

  • absolutely necessary: he made himself indispensable to the parish priest

Derivatives

indispensability

Pronunciation: /-ˈbɪlɪti/
noun

indispensableness

noun

indispensably

adverb

Origin:

mid 16th century (in the sense 'not to be allowed or provided for by ecclesiastical dispensation'): from medieval Latin indispensabilis, from in- 'not' + dispensabilis (see dispensable)