Substantial
Substantial adjective - Having great meaning or lasting effect.
Tough and substantial are semantically related In some cases you can use "Tough" instead an adjective "Substantial".
Tough
Tough adjective - Not easily chewed.
Substantial and tough are semantically related in durable topic. Sometimes you can use "Substantial" instead an adjective "Tough".
Both words in one sentence
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He won three Hugo awards and had many nominations.His early writing career was tough: he was defrauded of substantial prize money.
Source: Creator / Philip José Farmer - Adventurers in the undersea zone Octopus's Garden should be wary of the moister oyster, a super-tough monster with substantial resistance to all types of damage encountered there on a semi-rare basis.
Source: Boss in Mook Clothing -
Beef Gate: Several areas that are accessible early in the game such as New Londo Ruins, Tomb of the Giants and Demon Ruins are populated by powerful enemies or guarded by a tough boss, but a skilled low-level player can reap substantial rewards should they overcome the challenge.
Cite this Source
Tough and Substantial. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/substantial/tough
Substantial & Tough. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/substantial/tough>.
Tough or Substantial. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/substantial/tough.
Google Ngram Viewer shows how "substantial" and "tough" have occurred on timeline