Key
Key adjective - Coming before all others in importance.
Usage example: maintains that Sir Isaac Newton remains the key figure in physical science
Primal
Primal adjective - Coming before all others in importance.
Usage example: the primal theme of the essay is toleration of religious diversity
Mutual synonyms
Both words in one sentence
- Primal Scream, one of the weirdest bands of the genre due to their influence from house music and trippy psychedelic beats, but Screamadelica is considered a key Britpop album.
Source: Britpop -
MacGuffin Delivery Service: Lacertus Rex allows the World Destruction Committee to rescue Kyrie and kill the Primal Lords which are key to unlocking his power, then demands that they hand him over so he can be used to create a world where Lacertus Rex is the supreme ruler.
Cite this Source
Primal and Key. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/key/primal
Key & Primal. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/key/primal>.
Primal or Key. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/key/primal.
Google Ngram Viewer shows how "key" and "primal" have occurred on timeline