boylike

There was a naturalness in his enjoyment which was almost boylike; a naive sort of exultation possessed him.

With the passing of the years, many changes have occurred to sunder the friendships formed during those boylike expeditions.

Boylike he climbed to a hiding place, from which he watched the proceedings with the deepest awe.

As for Biorn he sorrowed bitterly for a week, and then, boylike, forgot his grief in the wonder of living.

And when Steve caught sight of Jim's sober face and heard the story, he thought it very boylike and rather amusing.