Primary
Primary adjective - Coming before all others in importance.
Worthwhile and primary are semantically related. In some cases you can use "Worthwhile" instead an adjective "Primary".
Worthwhile
Worthwhile adjective - Sufficiently valuable to justify the investment of time or interest.
Primary and worthwhile are semantically related. Sometimes you can use "Primary" instead an adjective "Worthwhile".
Mutual synonyms
Both words in one sentence
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In fact, the primary reason Jean is always dying/fainting is because it's damn near impossible for writers to make a worthwhile challenge for her.
Cite this Source
Worthwhile and Primary. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/primary/worthwhile
Primary & Worthwhile. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/primary/worthwhile>.
Worthwhile or Primary. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/primary/worthwhile.
Google Ngram Viewer shows how "primary" and "worthwhile" have occurred on timeline