Increase and Speeding up

Opposite meaning terms

Increase verb - To make greater in size, amount, or number.

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Speeding up is an antonym for increase.

Definitions of Increase not found.

Increase is an antonym for speeding up in alleviate topic.

Speeding up the Earth's rotation would have no effect on the number of days in a week (unless you define a week 1/52 of a year, in which case it would increase the number of days per week, because it would make the days shorter without affecting the year).

Source: Spin the Earth Backwards

Cite this Source

Speeding up and Increase. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/increase/speeding_up

Increase & Speeding up. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/increase/speeding_up>.

Speeding up or Increase. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/increase/speeding_up.

Google Ngram Viewer shows how "increase" and "speeding up" have occurred on timeline