youngness

All this to the alien suggests something, a want of balance, a "youngness" perhaps.

For she knew that his eyes would gaze upon and desire all the beauty and the youngness of the world.

He wondered if he were merely jealous of her youngness which went on beyond him discovering itself.

Among relations, youngness is commonly taken into full account.

"Why, I believe you're right about the youngness," he admitted, with a smile.