Source : Webster's Revised Unabridged Dictionary (1913)

Littleness \Lit"tle*ness\, n.
   The state or quality of being little; as, littleness of size,
   thought, duration, power, etc.

   Syn: Smallness; slightness; inconsiderableness; narrowness;
        insignificance; meanness; penuriousness.

Source : WordNet®

littleness
     n : the property of having a relatively small size [syn: {smallness}]
         [ant: {largeness}, {largeness}]