| mordacious | (adjective) biting or given to biting | - |
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| (adjective) capable of wounding | Synonyms: barbed, biting, nipping, pungent |
| mordaciously | (adverb) in a mordacious manner | - |
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| mordacity | (noun) a disposition to biting | - |
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| mordant | (adjective) of a substance, especially a strong acid; capable of destroying or eating away by chemical action | Synonyms: caustic, corrosive, erosive, vitriolic |
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| (adjective) harshly ironic or sinister | Synonyms: black, grim |
| (noun) a substance used to treat leather or other materials before dyeing; aids in dyeing process | - |