tremulousness

Tess's look had grown hard and worn, and her ripe mouth tragical; but she no longer showed any tremulousness.

Reprehensibility and tremulousness were great favorites of his, though I don't believe he ever knew what they meant.

The frown was still upon her forehead, although to a certain extent it was contradicted by a slight tremulousness of the lips.

There was what I may call a certain tremulousness, but no faltering.

Those calm and dignified steps were taken by feet which little betrayed the tremulousness of the knees above them.