Hypersomnia and Insomnia

Opposite meaning words

Hypersomnia noun - An inability to stay awake.

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Insomnia is an antonym for hypersomnia.

Insomnia noun - An inability to sleep; chronic sleeplessness.

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Hypersomnia is an antonym for insomnia.

Nearby Word: insomniac

Cite this Source

Insomnia and Hypersomnia. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/hypersomnia/insomnia

Hypersomnia & Insomnia. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/hypersomnia/insomnia>.

Insomnia or Hypersomnia. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/hypersomnia/insomnia.

Google Ngram Viewer shows how "hypersomnia" and "insomnia" have occurred on timeline