Kathleen, however, was much taken by their schoolboyish ways.
"The Rebel of the School"
Mrs. L. T. Meade
All the officers had a schoolboyish demeanour; all of them called one another by diminutives ending in 'y'; all of them were pretty young.
"The Roll-Call"
Arnold Bennett
But there is something a little schoolboyish in it; and I do not know that Balzac has succeeded entirely in eliminating this something.
"The Thirteen"
Honore de Balzac