Unimportant and Weighty

Opposite meaning words

Unimportant adjective - Lacking importance.

Usage example: we figured that the details were unimportant as long as we got the basic design correct

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Weighty is an antonym for unimportant.

Weighty adjective - Having a matter of importance as its topic.

Usage example: interrupted a weighty discussion with a silly question

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Unimportant is an antonym for weighty in topics: heavy, serious, troublesome.

Cite this Source

Weighty and Unimportant. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/unimportant/weighty

Unimportant & Weighty. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/unimportant/weighty>.

Weighty or Unimportant. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/unimportant/weighty.

Google Ngram Viewer shows how "unimportant" and "weighty" have occurred on timeline