Her face was made of angular planes, the shape of her mouth clear-cut, a sensual mouth held closed with inflexible precision.
She smiled defiantly, not letting herself know the full meaning of her smile, knowing only that it was the sharpest blow she could strike at his inflexible face.
The course was hard to trace: the gaunt figure on the edge of the desk was erect, the cold blue eyes showed nothing but the intensity of a glance fixed upon a great distance, only the inflexible mouth betrayed a line drawn by pain.
The military march boomed through the silence with the inflexible gaiety of a grinning skull.
There are no more uses of "inflexible" in the book.
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They accused her of being stubborn and inflexible.