Dens
Fortresses and dens are semantically related. In some cases you can use "Fortresses" instead a noun "Dens".
Fortresses
Dens and fortresses are semantically related. Sometimes you can use "Dens" instead a noun "Fortresses".
Mutual synonyms
Both words in one sentence
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Skyrim alone has regular caves and mines (often serving as dens for bandits, Falmer, vampires, etc.), ancient Nordic burial tombs, and subterranean fortresses guarded by machines that were built by their long-since-vanished Dwemer masters.
Source: Underground Level
Cite this Source
Fortresses and Dens. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/dens/fortresses
Dens & Fortresses. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/dens/fortresses>.
Fortresses or Dens. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/dens/fortresses.
Google Ngram Viewer shows how "dens" and "fortresses" have occurred on timeline