Indispensable and Prerequisite

Indispensable

Indispensable adjective - Impossible to do without.
Usage example: fully aware that he was an indispensable assistant, he decided that it was high time that he be paid what he was worth

Prerequisite is a synonym for indispensable in necessary topic. In some cases you can use "Prerequisite" instead an adjective "Indispensable".

Nearby Word: indispensably

Prerequisite

Prerequisite adjective - Required as a prior condition or course of study.
Show all Definitions
Synonyms for Prerequisite

Indispensable is a synonym for prerequisite in necessary topic. You can use "Indispensable" instead an adjective "Prerequisite", if it concerns topics such as required.
Cite this Source
Prerequisite and Indispensable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/indispensable/prerequisite
Indispensable & Prerequisite. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/indispensable/prerequisite>.
Prerequisite or Indispensable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/indispensable/prerequisite.
Google Ngram Viewer shows how "indispensable" and "prerequisite" have occurred on timeline