(a.) Resembling a boy in a manners or opinions; belonging to a boy; childish; trifling; puerile.

adolescent airy attenuate attenuated beardless boylike calflike childish childlike coltish delicate diaphanous diluted ethereal fine fine-drawn finespun flimsy frail gauzy girlish girllike gossamer gracile immature insubstantial juvenile kiddish lacy light maiden maidenly misty papery puerile puplike puppyish puppylike rare rarefied slender slenderish slight slight-made slim slimmish slinky small subtle svelte sylphlike tenuous thin thin-bodied thin-set thin-spun thinnish threadlike vague wasp-waisted watered watered-down watery weak willowy wiredrawn wispy young youthful