Blacken
Blacken verb - To make dark, dim, or indistinct.
Usage example: thick smoke from the forest fires blackened the sky for many miles
Fog
Fog verb - To make dark, dim, or indistinct.
Usage example: time will fog memories
Mutual synonyms
Both words in one sentence
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Once Soltis rises out of the Mid Ocean, the skyline is filled with silver-looking fog and the clouds blacken.
Source: Video Game / Skies of Arcadia
Cite this Source
Fog and Blacken. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/blacken/fog
Blacken & Fog. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/blacken/fog>.
Fog or Blacken. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/blacken/fog.
Google Ngram Viewer shows how "blacken" and "fog" have occurred on timeline