Wraithlike

I am not sure." His eyes had been half closed, and when he opened them there was a real woman before him, not the wraithlike Elizabeth. And she was gazing at him with curiosity, and perhaps, he thought, with some affection. It was queer that she had come to him when no one had forced her to come. She must be fascinated. He reached into his memory for the speeches he had built on his way across the isthmus. "You must marry me, Elizabeth—Ysobel.

And they are the most wraithlike.