mordacious

comparative more mordacious · superlative most mordacious

1. Biting, causing a physical bite or sting; corrosive
2. Sharp or caustic in style or tone.
3. Sharp in intent, sarcastic.

   And that is really the long and the short of the whole matter, my mordacious friend.

   1927, Ernest Bramah [pseudonym; Ernest Brammah Smith], Max Carrados Mysteries

4. Prone to biting, aggressive (of an animal etc.).

   Not gyved with connubial relations, I entered upon my migration entirely isolated, with the exception of a canine quadruped whose mordacious, latrant, lusorious, and venatic qualities, are without parity.

   1856, Samuel Klinefelter Hoshour, Letters to Squire Pedant, in the East, page 13