Authentic
Authentic adjective - Being exactly as appears or as claimed.
Substantial and authentic are semantically related. In some cases you can use "Substantial" instead an adjective "Authentic".
Substantial
Substantial adjective - Having great meaning or lasting effect.
Authentic and substantial are semantically related. Sometimes you can use "Authentic" instead an adjective "Substantial".
Both words in one sentence
- In a commentary for a season 5 episode of 24, Julian Sands admits he didn't bother attempting an authentic accent for the Slavic Vladimir Bierko, imagining him to have spent a substantial amount of time in England.
Source: Unexplained Accent
Cite this Source
Substantial and Authentic. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/authentic/substantial
Authentic & Substantial. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/authentic/substantial>.
Substantial or Authentic. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/authentic/substantial.
Google Ngram Viewer shows how "authentic" and "substantial" have occurred on timeline