The Collaborative International Dictionary of English v.0.48:

Dwarfish \Dwarf"ish\, a.
   Like a dwarf; below the common stature or size; very small;
   petty; as, a dwarfish animal, shrub. -- Dwarf"ish*ly, adv.
   -- Dwarf"ish*ness, n.
   [1913 Webster]