mordacious

from WordNet (r) 3.0 (2006)

mordacious
    adj 1: capable of wounding; "a barbed compliment"; "a biting
           aphorism"; "pungent satire" [syn: {barbed}, {biting},
           {nipping}, {pungent}, {mordacious}]
    2: biting or given to biting; "they deliberately gave me a
       skittish and mordacious mount"

from The Collaborative International Dictionary of English v.0.48

Mordacious \Mor*da"cious\, a. [L. mordax, -acis, fr. mordere,
   morsum, to bite. See {Morsel}.]
   Biting; given to biting; hence, figuratively, sarcastic;
   severe; scathing. -- {Mor*da"cious*ly}, adv.
   [1913 Webster]

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