Insignificant and Substantial

Opposite meaning words

sentence examples

Insignificant

Insignificant adjective - Lacking importance.
Usage example: an insignificant detail that we can safely ignore
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Synonyms for Insignificant
Antonyms for Insignificant
Substantial is an antonym for insignificant in topics: unimportant, significant, not important.
Nearby Words: insignificance, insignificancy, insignificantly

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
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Synonyms for Substantial
Antonyms for Substantial
Insignificant is an antonym for substantial in topics: rich, material, important.
Nearby Words: substance, substantiate, substantially, substantiality, substantiation
Similar words of insignificant

Similar words of substantial

Both words in one sentence

  • Useful Notes / Nuclear Weapons For smaller nukes, especially rather small tactical devices, immediate radiation accounts for much more of the damage they inflict than the (still very substantial) explosive effects, although delayed radiation from fallout is insignificant.
    Source: Useful Notes / Nuclear Weapons
  • Do with Him as You Will The fatal element of this is that part of Blackfire's creed that he hammered into the heads of his kidnapped followers was that their substantial suffering was insignificant in the greater scheme of things.
    Source: Do with Him as You Will
Cite this Source
Substantial and Insignificant. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/insignificant/substantial
Insignificant & Substantial. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/insignificant/substantial>.
Substantial or Insignificant. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/insignificant/substantial.

Antonyms for insignificant


Antonyms for substantial

Google Ngram Viewer shows how "insignificant" and "substantial" have occurred on timeline