Silliness

n.

1.

The quality or state of being silly.

Noun	1.	silliness - a ludicrous folly; "the crowd laughed at the absurdity of the clown's behavior" Synonyms: fatuity, fatuousness, absurdity
	2.	silliness - an impulsive scatterbrained manner Synonyms: giddiness

absurdity, fatuity, fatuousness, folly, foolishness, unwiseness