Split-second and Unimportant

Opposite meaning words

Split-second adjective - Done or occurring without any noticeable lapse in time.

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Unimportant is an antonym for split-second in immediate topic.

Unimportant adjective - Lacking importance.

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Split-second is an antonym for unimportant.

Cite this Source

Unimportant and Split-second. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/split-second/unimportant

Split-second & Unimportant. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/split-second/unimportant>.

Unimportant or Split-second. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/split-second/unimportant.