indispensable

About 6.71 uses per million words.

Meaning

1. adjective Absolutely necessary or requisite; that one cannot do without. .mw-parser-output .defdate{font-size:smaller}

   An indispensable component of a heart-healthy diet.

2. adjective Unbendable, that cannot be set aside or ignored.
3. adjective Not admitting ecclesiastical dispensation; not subject to release or exemption; that cannot be allowed by bending the canonical rules.
4. noun A thing that is not dispensable; a necessity.
5. noun Trousers.

Similar words

critical essential necessary obligatory vital invaluable priceless inevitable undeniable unavoidable

Often followed by

to for in condition part and that as element

Word family

indispensabilities indispensability indispensableness indispensablenesses indispensables indispensably