Functional
Functional adjective - Being in effective operation.
Principal and functional are semantically related. In some cases you can use "Principal" instead an adjective "Functional".
Principal
Principal adjective - Coming before all others in importance.
Functional and principal are semantically related. Sometimes you can use "Functional" instead an adjective "Principal".
Both words in one sentence
- In the Dungeons & Dragons Wrath of the Immortals campaign, the two principal factions of Immortals (D&D's functional equivalent of AD&D's gods), the Ring of Fire and the Fellowship of the Star, both have good reasons for what they do, and both pursue their objectives by morally questionable means.
Cite this Source
Principal and Functional. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/functional/principal
Functional & Principal. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/functional/principal>.
Principal or Functional. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/functional/principal.
Google Ngram Viewer shows how "functional" and "principal" have occurred on timeline