Functional
Functional adjective - Being in effective operation.
Primary and functional are semantically related. In some cases you can use "Primary" instead an adjective "Functional".
Primary
Primary adjective - Coming before all others in importance.
Functional and primary are semantically related. Sometimes you can use "Functional" instead an adjective "Primary".
Both words in one sentence
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In fact his primary limbs appear to be non-functional.
Cite this Source
Primary and Functional. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/functional/primary
Functional & Primary. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/functional/primary>.
Primary or Functional. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/functional/primary.
Google Ngram Viewer shows how "functional" and "primary" have occurred on timeline