Staidness
Part of speech: noun
Definition: The property of being staid.
Solemnity
Part of speech: noun
Definition: The quality of being deeply serious and sober or solemn.An instance or example of solemn behavior.
Example sentence: I have been aware all the time that my peoples, spread far and wide throughout every continent and ocean in the world, were united to support me in the task to which I have now been dedicated with such solemnity.