Big
Big adjective - Having great meaning or lasting effect.
Usage example: there will be a big meeting to resolve the issue
Substantial is a synonym for big in large topic. In some cases you can use "Substantial" instead an adjective "Big", when it comes to topics like important. popular alternative
Nearby Word: bigness
Substantial
Substantial adjective - Having great meaning or lasting effect.
Usage example: substantial changes to the school dress code that made a lot of people unhappy
Big is a synonym for substantial in important topic. You can use "Big" instead the word "Substantial" as an adjective or a noun, if it concerns topics such as property, hefty. popular alternative
Mutual synonyms
Both words in one sentence
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In Galaxy of Fear there's a book, Spore, that largely takes place on an asteroid that's large but not big enough for substantial gravity.
Source: Artificial Gravity -
His involvement in Batman: Arkham City was substantial enough to rival Hugo Strange, the game's real big bad.
Source: Spotlight-Stealing Squad -
Overlaps with Hyperspace Arsenal, given that he's been known to keep a substantial number of large weapons, and on occasion an armoured spacesuit big enough to fit himself in... The Soulless: The Reverend doesn't think that AIs have souls.
Source: Webcomic / Schlock Mercenary
Cite this Source
Substantial and Big. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/big/substantial
Big & Substantial. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/big/substantial>.
Substantial or Big. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/big/substantial.
Google Ngram Viewer shows how "big" and "substantial" have occurred on timeline