Gibbon sat and listened unobserved to their strictures.
The Franciscans slipped away unobserved, but Savonarola raising the host attempted to lead.
I walked about the outside, at first unobserved from within, the window was so deep and high.
It would be premature to judge how far the problem of the origin of races may be capable of exact solution; but the experience gained since 1871 countenances Darwin's prophecy that before long the dispute between the monogenists and the polygenists would die a silent and unobserved death.
By 100 m.; and to concentrate the French army unknown to, and unobserved by, the allies, within striking distance and before they had moved a man to meet the onrush of the foe, was unthinkable.