Youngish

Algeria is a youngish country.

In spite of his youngish appearance, he had much experience.

By one o'clock the place was choc-a-bloc. […] The restaurant was packed, and the promenade between the two main courts and the subsidiary courts was thronged with healthy-looking youngish people, drawn to the Mecca of tennis from all parts of the country.

And our young – well, youngish, since the male cast is now 90% Adam’s apple – heroes have to stop him.