Significados de slender stripling en inglés

What was there about this slender stripling which so disarmed criticism?

The slender stripling, tall for his years, was yet in the blossom of his youth.

The squire, a dark, slender stripling, spoke firmly and quickly, as one who was trained to swift action.

He was a slender stripling with high forehead, long, straight nose, and a face chiefly marked by an imperious expression.

I have seen a brawny, fellow, with no lack of ordinary courage, fairly quail before this slender stripling, when in one of his curious fits.