Insignificant and Mainline

Opposite meaning words

Insignificant adjective - Lacking importance.

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Mainline is an antonym for insignificant.

Mainline verb - Inject into the vein.

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Insignificant is an antonym for mainline in most important topic.

Nearby Words: main, mainlined

Cite this Source

Mainline and Insignificant. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/insignificant/mainline

Insignificant & Mainline. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/insignificant/mainline>.

Mainline or Insignificant. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/insignificant/mainline.

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