Definify.com

Webster 1913 Edition

Noun.

The quality or state of being staid; seriousness; steadiness; sedateness; regularity; – the opposite of

wildness

, or

levity

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.

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

Noun.

Sobriety; gravity; steadiness; regularity; the opposite of wildness.

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

staidness ‎(usually uncountable, plural staidnesses)

The state or characteristic of being staid.
- 1836, Charles Dickens, Sketches of Boz, ch. 7:
  It is difficult to say whether Mr. John Dounce's red countenance, illuminated as it was by the flickering gas-light in the window before which he paused, excited the lady's risibility, or whether a natural exuberance of animal spirits proved too much for that staidness of demeanour which the forms of society rather dictatorially prescribe.
- 1887, Charlotte M. Yonge, Under the Storm, ch. 22:
  [T]here was a staidness and sobriety about her demeanour that kept all impertinence at a distance.