Looking on the internet deeply has found these results:

the silliest is the most popular phrase on the web.

the most silly 1121,000 results on the web	the silliest 1462,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
You dropped your silly blue hat. Highland Dwarves are a silly culture. Stops creating silly ideas about ourselves. Mankind does such silly things sometimes. I did something very silly. I tracked your iPhone, silly.	Lois Lane, that is the silliest idea. Our life holds few distinctions, Mrs Bennet, but I think we may safely boast that here sit two of the silliest girls in the country. People just fight over the silliest little things. I've had the silliest thought. A little weepy over the silliest things. Our life holds few distinctions, Mrs. Bennet, but I think we may safely boast that here sit two of the silliest girls in the country. We're the silliest rabble you can find.

the most silly

1121,000 results on the web

the silliest

1462,000 results on the web

More popular!

Lois Lane, that is the silliest idea.
Our life holds few distinctions, Mrs Bennet, but I think we may safely boast that here sit two of the silliest girls in the country.
People just fight over the silliest little things.
I've had the silliest thought.
A little weepy over the silliest things.
Our life holds few distinctions, Mrs. Bennet, but I think we may safely boast that here sit two of the silliest girls in the country.
We're the silliest rabble you can find.