Another word for stumbling-block

Being and not being are thus declared identical - a proposition which in this unqualified shape was to most people a stumbling-block at the very door of the system.

"What kept these bodies apart was their separate historic origin and development, but especially the alienation caused by the ` Voluntary Controversy ' which had its roots in the difficult problems of civil law in its relation to religion, and the stumbling-block of the civil magistrate's authority in relation to the Christian conscience."

Maimonides also wrote an Arabic commentary on the Mishnah, soon afterwards translated into Hebrew, commentaries on parts of the Talmud (now lost), and a treatise on Logic. His breadth of view anti- and his Aristotelianism were a stumbling-block to the orthodox, and subsequent teachers may be mostly classified as Maimonists or anti-Maimonists.

Nor was their complexity a stumbling-block.

The agreement between Chile and Bolivia, by which the disputed provinces were to be handed over to the latter country if Chilean possession was recognized, was also a stumbling-block, a strong feeling existed among Peruvians against this proceeding.