ungirl

For the sake of her bright, breezy companionship, of her original, ungirl-like way of looking at things, he endured the ordering and the coddling, and, in spite of the halo of sanctity which should have surrounded his semi-invalidism, it must be confessed that he bore out his own part in the squabbles.

Teddy: Her Book A Story of Sweet Sixteen Anna Chapin Ray 1905

She has been caught at the top of a tall tree examining the eggs in a nest, and in many similar ungirl-like positions; so you won't find her a dull companion.

One of the 28th A Tale of Waterloo 1867