Nightmare
Nightmare noun - A situation or state that causes great suffering and unhappiness.
Underworld and nightmare are semantically related in hades topic. In some cases you can use "Underworld" instead a noun "Nightmare".
Nearby Word: nightmarish
Underworld
Underworld noun - A social sphere that exists outside of the mainstream.
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Synonyms for Underworld
Nightmare and underworld are semantically related in hades topic. Sometimes you can use "Nightmare" instead a noun "Underworld".
Mutual synonyms
Related pairs
- trial and nightmare
- trial and underworld
- difficulty and nightmare
- difficulty and underworld
- affliction and nightmare
- affliction and underworld
- suffering and nightmare
- suffering and underworld
- misery and nightmare
- misery and underworld
- torment and nightmare
- torment and underworld
- torture and nightmare
- torture and underworld
How words are described
Both words in one sentence
- The Underworld is a nightmare land of despair and casual atrocities, ruled by a brutal dictatorship, and the only way forward is down.
Source: Supernatural Angst -
Nightmare is the manifestation of everyone's bad dreams, Dark Mind from The Amazing Mirror is an evil mirror demon, and Dark Nebula from Squeak Squad is a sleeping Eldritch Abomination stated to be the ruler of the underworld.
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The underworld itself can only be explored briefly in Riviera's Bonus Level Of Hell, but the Accursed and demon gods have starred as enemies in both that game and Knights in the Nightmare.
Source: Demon Lords and Archdevils
Cite this Source
Underworld and Nightmare. (2016). Retrieved 2026, August 12, from https://thesaurus.plus/related/nightmare/underworld
Nightmare & Underworld. N.p., 2016. Web. 12 Aug. 2026. <https://thesaurus.plus/related/nightmare/underworld>.
Underworld or Nightmare. 2016. Accessed August 12, 2026. https://thesaurus.plus/related/nightmare/underworld.
Google Ngram Viewer shows how "nightmare" and "underworld" have occurred on timeline