Slight and Substantial

Opposite meaning words

Slight adjective - Lacking importance.

Usage example: a slight comedy that did nothing to further her career

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Substantial is an antonym for slight in topics: small, noticeable.

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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Slight is an antonym for substantial in topics: important, minor.

Cite this Source

Substantial and Slight. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/slight/substantial

Slight & Substantial. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/slight/substantial>.

Substantial or Slight. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/slight/substantial.

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