Deep
Deep adjective - Extending far downward.
Substantial and deep are semantically related. In some cases you can use "Substantial" instead an adjective "Deep".
Substantial
Substantial adjective - Having great meaning or lasting effect.
Deep and substantial are semantically related. Sometimes you can use "Deep" instead an adjective "Substantial".
Both words in one sentence
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That's perhaps the best when combined with horror, but given the deep, requires-substantial-thought satire and themes "action" seems misleading.
Source: Genre-Busting -
Gratuitous Panning: "Think Different" has Substantial performing a "The Reason You Suck" Rap, but also has another Substantial panned deep into the right responding to the different insults.
Source: Music / Nujabes - A Fire Upon the Deep by Vernor Vinge ends with a desperate message begging for any response after a cataclysmic surge of the slowzone ends up cutting a substantial portion of the beyond and the transcend off from access to the Known Net, disrupting communications throughout the galaxy.
Source: Epilogue Letter
Cite this Source
Substantial and Deep. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/deep/substantial
Deep & Substantial. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/deep/substantial>.
Substantial or Deep. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/deep/substantial.
Google Ngram Viewer shows how "deep" and "substantial" have occurred on timeline