| negligence(blank, carelessness, vagueness, inattention, amnesia) | |
| nightfall(noun, place, dark, gloom, obscurity) | |
| nirvana principle | |
| noiselessness(calm, quiet, speech, silence, softness) | |
| oath of secrecy(expression, idiom) | |
| obscuration | |
| obscurity(noun, place, dark, gloom, night) | |
| occultation | |
| official secrecy | |
| outages | |
| pall | |
| paramnesia(blank, carelessness, negligence, vagueness, inattention) | |
| passing | |
| pitch darkness(noun, expression, place, dark, gloom) | |
| place(noun, set, show, dark, gloom) | |
| power cut(noun, expression, idiom) | |
| pressure suit | |
| quiescence(calm, quiet, speech, silence, softness) | |
| quiet(calm, speech, silence, softness, reticence) | |
| quietness(calm, quiet, speech, silence, softness) |
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| APA | Smart Define. (2015). blackout thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/blackout/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "blackout thesaurus" https://smartdefine.org/blackout/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, blackout thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/blackout/thesaurus/synonyms>. |
| MLA | Smart Define. "blackout thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/blackout/thesaurus/synonyms> |