Official
Official adjective - Ordered or allowed by those in authority.
Professional and official are semantically related. In some cases you can use "Professional" instead an adjective "Official".
Professional
Professional adjective - Of or relating to or suitable as a profession.
Official and professional are semantically related. Sometimes you can use "Official" instead an adjective "Professional".
How words are described
Both words in one sentence
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Demo v0.7 of 2 was the official turning point from "anything-goes fangame" to aiming for professional quality.
Source: Video Game / Super Smash Flash - It helps that he's a professional singer (he even WROTE some official Scooby-Doo songs).
Source: Non-Singing Voice - Despite all the professional success and having the official knight title of Sir Laurence Olivier, he always insisted on being called "Larry".
Cite this Source
Professional and Official. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/official/professional
Official & Professional. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/official/professional>.
Professional or Official. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/official/professional.
Google Ngram Viewer shows how "official" and "professional" have occurred on timeline