Sentence examples for this is juvenile from inspiring English sources

This is juvenile, arrant nonsense.

I suggested that this was juvenile.

This was juvenile, I admit -- but that was the point, to be juvenile.

Most of this work is juvenile, but the best of it exploits teenage angst to convey something of the wincing discomfort of unadulterated emotion and the appeal of nonconformism before it is thwarted by real-world experience and cliché -- a metaphor for art-making.

Another important chronic physical illness in childhood in this environment is juvenile diabetes mellitus (JDM).

This, as I said before, is juvenile.

Some of it is juvenile.

There is juvenile libertarianism, represented by Ron Paul.

A lot of their program is juvenile.

Includes sections on: What is Juvenile Diversion?

But this isn't juvenile delinquency.