Source : Webster's Revised Unabridged Dictionary (1913)

Gabbier \Gab"bier\, n.
   One who gabbles; a prater.

Source : WordNet®

gabbier
     See {gabby}

gabby
     adj : full of trivial conversation; "kept from her housework by
           gabby neighbors" [syn: {chatty}, {garrulous}, {loquacious},
            {talkative}, {talky}]
     [also: {gabbiest}, {gabbier}]