Juvenile at Troynovant:
dawns of adventure & science fiction,
designed for a younger audience
of readers & viewers;
listed by Title
  

We are not captivated by labels and categories as may be applied in school libraries and chain bookstores. We here speak of books, stories, and films designed for an audience of teenagers or pre-teens, or particularly enjoyable by these. We are flexible, and our purpose is not to enshrine definitions but to gather works aimed at a younger audience, or particularly enjoyable by them

Generally the themes and main characters are of a pre-romantic youthfulness, though they may touch the fringes of Romance: thus we do not list below Romeo and Juliet. — Some series straddle our upper threshold: this stratum includes Tolkien's The Hobbit but not its sequel The Lord of the Rings; includes Schmitz's "Novice" but not its direct sequel "Undercurrents" or the rest of the Telzey Amberdon series.
  

  
[The King of Navarre's park.]

[Enter Armado the braggart, and Mote his boy]

Armado:

The way is but short. Away!

Mote:

As swift as lead, sir.

Armado:

The meaning, pretty ingenious?
Is not lead a metal heavy, dull, and slow?

...

Mote:

            You are too swift, sir, to say so.
Is that lead slow which is fired from a gun?

Armado:

Sweet smoke of rhetoric!
He reputes me a cannon, and the bullet, that's he.
I shoot thee at the swain.

Mote:

            Thump, then, and I flee.      [Exit]

Armado:

A most acute juvenal — voluble, and free of grace.

William Shakespeare
Love's Labour's Lost, 3.1.47-58

[ voluble means quick-witted, as youth may be occasionally — ask any one. ]