Blacken
Blacken verb - To make dirty.
Become overcast and blacken are semantically related. In some cases you can use "Become overcast" instead a verb "Blacken".
Become overcast
Blacken and become overcast are semantically related. You can use "Blacken" instead a verb phrase "Become overcast".
Cite this Source
Become overcast and Blacken. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/blacken/become_overcast
Blacken & Become overcast. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/blacken/become_overcast>.
Become overcast or Blacken. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/blacken/become_overcast.
Google Ngram Viewer shows how "blacken" and "become overcast" have occurred on timeline