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a. Bitingly sarcastic: mordant satire.
b. Incisive and trenchant: an inquisitor's mordant questioning.
2. Bitingly painful.
3. Serving to fix colors in dyeing.
1. A reagent, such as tannic acid, that fixes dyes to cells, tissues, or textiles or other materials.
2. A corrosive substance, such as an acid, used in etching.
tr.v. mor·dant·ed, mor·dant·ing, mor·dants
To treat with a mordant.

[French, from Old French, present participle of mordre, to bite, from Vulgar Latin *mordere, from Latin mordēre; see mer- in Indo-European roots.]

mor′dan·cy n.
mor′dant·ly adv.
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References in periodicals archive ?
It has the bouncy rhythm of a charabanc, mordantly witty lyrics, and, fittingly, its tempo is perfect for gently cruising past coaches on the M6 motorway.
But unlike in Einstein, there is no crescendo in The Old Woman, which sustains a single, fierce, mordantly comic level of intensity for its entire hour and forty minutes, albeit with a scattering of nearly still and speechless moments that last just long enough for the performers and audience to catch their breaths.
It says much about his talent as a writer that he makes these years of funk lively, engrossing and on occasion mordantly funny.
He said the instructions for Cooperstown were "like D-Day,'' but noted mordantly, "Anything I do is OK because they'll say, 'He's old.
After his arrest, he thoroughly expected (or mordantly projected an expectation of) his imminent execution for treason--he was apparently living on borrowed time when he wrote The Pisan Cantos (1948).
It includes a poem whose mordantly ironic title itself became a proverb in the conflict" Whatever You Say Say Nothing.
1543-44), mordantly anticipates his own demise; fire both cleaves to and cleaves apart, much like love for the "adorable, detestable" Atalanta or a mother's fearsome love.
Casanova's passionate penchant finds a champion in Szentkuthy's mordantly sensuous regard, especially for what Casanova calls the "vegetative life" of nature, treating his subject as a prompter to frame new roles, don new masks with which to disport and display their shared elan.
By relying on his pen, he expressed his revulsion acerbically and mordantly at the way the body politic behaved.
The Candidate (1972) Screenwriter Jeremy Lardner earned an Oscar for The Candidate, a mordantly funny dissection of big-time politics.
Indeed, some mordantly argue that law reviews have never had any audience, save for the authors' mothers.
As Stanley mordantly puts it, "Few [campaigns] have ended so ignominiously--denying that its voters even existed.