\Staid"ness\, n.
The quality or state of being staid; seriousness; steadiness;
sedateness; regularity; -- the opposite of wildness, or
{levity}.

      If sometimes he appears too gray, yet a secret
      gracefulness of youth accompanies his writings, though
      the staidness and sobriety of age wanting. --Dryden.

Syn: Sobriety; gravity; steadiness; regularity; constancy;
     firmness; stability; sedateness.