Definition of 'mordant'

Noun

1. a substance used to treat leather or other materials before dyeing; aids in dyeing process

Adjective

1. harshly ironic or sinister; "black humor"; "a grim joke"; "grim laughter"; "fun ranging from slapstick clowning ... to savage mordant wit"
      Synonyms: black grim
2. 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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