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Synonyms & Antonyms of penumbra
1
partial darkness due to the obstruction of light rays
- the lunar eclipse began with a subtle darkening of the lunar surface as it passed within the Earth's penumbra
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2
something that covers or conceals like a piece of cloth
- a penumbra of despair fell over the doomed city
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From the Editors at Merriam-Webster
'Stygian,' 'Umbra,' and Other Darkness...
'Stygian,' 'Umbra,' and Other Darkness Words
Words for the goth in all of us
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“Penumbra.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/penumbra. Accessed 8 Aug. 2020.
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The first known use of penumbra was in 1665
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