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
Persistent and indispensable are semantically related. In some cases you can use "Persistent" instead an adjective "Indispensable".
Nearby Word: indispensably
Persistent
Persistent adjective - Continuing despite difficulties, opposition, or discouragement.
Indispensable and persistent are semantically related. Sometimes you can use "Indispensable" instead an adjective "Persistent".
Cite this Source
Persistent and Indispensable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/indispensable/persistent
Indispensable & Persistent. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/indispensable/persistent>.
Persistent or Indispensable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/indispensable/persistent.
Google Ngram Viewer shows how "indispensable" and "persistent" have occurred on timeline