Black
Embargo
Both words in one sentence
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A sudden change in government, or an embargo due to some unsavory incident can effectively turn a chunk of a nation's military into a black box.
Source: Black Box -
Devil Ray from Justice League Unlimited could qualify; while he is never shown unmasked, he is voiced by Michael Beach, and he is a replacement for Black Manta, who couldn't be used due to a then-present Aquaman-related character embargo, and who also happens to be this trope in his own right.
Source: Scary Black Man
Cite this Source
Embargo and Black. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/black/embargo
Black & Embargo. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/black/embargo>.
Embargo or Black. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/black/embargo.
Google Ngram Viewer shows how "black" and "embargo" have occurred on timeline