| obscurity(gloom, darkness, puff, mist, fogginess) | |
| overcast(gloom, obscurity, darkness, puff, mist) | |
| owl | |
| pea soup(noun, expression, gloom, veil, cloud) | |
| pother(gloom, obscurity, darkness, puff, mist) | |
| puff(gloom, obscurity, darkness, mist, fogginess) | |
| rainbow | |
| raven | |
| red flag | |
| red light | |
| sheep(noun, gloom, veil, cloud, obscurity) | |
| shooting star | |
| skull and crossbones(expression, idiom) | |
| smog(gloom, obscurity, darkness, puff, mist) | |
| smoke(gloom, obscurity, darkness, puff, mist) | |
| smother(noun, gloom, veil, cloud, obscurity) | |
| storm clouds | |
| stormy petrel | |
| strato-cumulus(noun, cloud) | |
| veil(gloom, obscurity, darkness, puff, mist) |
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| APA | Smart Define. (2015). thunderhead thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/thunderhead/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "thunderhead thesaurus" https://smartdefine.org/thunderhead/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, thunderhead thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/thunderhead/thesaurus/synonyms>. |
| MLA | Smart Define. "thunderhead thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/thunderhead/thesaurus/synonyms> |