| basic(adjective, containing alkali) | |
| antacid(adjective, basic, acid, salty, containing alkali) | |
| alkalic | |
| caustic(adjective, basic, burning, acid, corrosive) | |
| alkalescent(adjective, basic, acid, salty, antacid) | |
| acrid(adjective, basic, sour, pungent, salt) | |
| salty(adjective, basic, salt, acid, saline) | |
| alkali(adjective, basic, acid) | |
| bitter(adjective, basic, acid) | |
| chemical(adjective, containing alkali) | |
| neutralizing(adjective, basic, acid) | |
| corrosive | |
| soluble(adjective, basic, acid) | |
| strontium | |
| acerbic | |
| actinic | |
| active | |
| alcalescent | |
| alkalis | |
| base-forming |
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| APA | Smart Define. (2015). alkaline thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/alkaline/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "alkaline thesaurus" https://smartdefine.org/alkaline/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, alkaline thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/alkaline/thesaurus/synonyms>. |
| MLA | Smart Define. "alkaline thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/alkaline/thesaurus/synonyms> |