Definition of puerile:
scatterbrained, immature, ludicrous, naive, dizzy, laughable, yeasty, goofy, childlike, insipid, jejune, not in your right mind/not right in the head, youth, flighty, unfledged, over-the-top, kiddish, light-headed, crazy, insubstantial, juvenile, harebrained, teen, unformed, ridiculous, raw, unripened, light-minded, frothy, ditzy, infantile, insane, babyish, silly, birdbrained, featherbrained, adolescent, frivolous, futile, teenaged, mad, study at young.
- adolescent (part of speech: adjective)
- young (part of speech: adjective)
This ostentation, though puerile in itself, yet had a purpose, for I wished M. de Bragadin to know that I did not cut a bad figure in the world; and I wished the proud magistrates who had made me quit my native land to learn that I had lost nothing, and could laugh at their severity.- "The Memoires of Casanova, Complete The Rare Unabridged London Edition Of 1894, plus An Unpublished Chapter of History, By Arthur Symons", Jacques Casanova de Seingalt.
- "Worldly Ways and Byways", Eliot Gregory.
It is true that not all the agents in the evolution of his greater tragedy are equally or sufficiently realized and vivified as active and distinct figures: true, for instance, that the two elder sons of the duchess are little more than conventional outlines of such empty violence and futile ambition as might be inferred from the crude and puerile symbolism of their respective designations: but the third brother is a type no less living than revolting and no less dramatic than detestable: his ruffian cynicism and defiant brutality are in life and death alike original and consistent, whether they express themselves in curses or in jeers.- "The Age of Shakespeare", Algernon Charles Swinburne.