Necessity
Necessity noun - Something necessary, indispensable, or unavoidable.
Overcrowding is an antonym for necessity.
Overcrowding
Both words in one sentence
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And that's just one of thousands the Mu possess (they built them out of necessity: having only one continent on their world meant overcrowding set in pretty quickly).
Source: Floating Continent
Cite this Source
Overcrowding and Necessity. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/necessity/overcrowding
Necessity & Overcrowding. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/necessity/overcrowding>.
Overcrowding or Necessity. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/necessity/overcrowding.
Google Ngram Viewer shows how "necessity" and "overcrowding" have occurred on timeline