slabbier

from The Collaborative International Dictionary of English v.0.48
Slabby \Slab"by\, a. [Compar. {Slabbier}; superl. {Slabbiest}.]
   [See {Slab}, a.]
   1. Thick; viscous.
      [1913 Webster]

            They present you with a cup, and you must drink of a
            slabby stuff.                         --Selden.
      [1913 Webster]

   2. Sloppy; slimy; miry. See {Sloppy}. --Gay.
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