staidness

n. The quality or state of being staid; seriousness; steadiness; sedateness; regularity; -- the opposite of wildness, or levity. [ 1913 Webster ]

If sometimes he appears too gay, yet a secret gracefulness of youth accompanies his writings, though the staidness and sobriety of age be wanting. Dryden. [ 1913 Webster ]

Syn. -- Sobriety; gravity; steadiness; regularity; constancy; firmness; stability; sedateness. [ 1913 Webster ]