| In practice, the political obstacles to metropolitan plans have been virtually insuperable for a generation and are likely to remain so. |
| It is the strong bond between the two parties that forms an almost insuperable barrier to entry and shuts out potential competitors. |
| But you seem not to have had any insuperable difficulty in locating the Barclay companies. |
| This is the radical uncertainty that haunts contemporary Marxist theorists, the insuperable difficulty of impossible exchange. |
| The flexibility result hints that lack of reform in Europe need not be an insuperable barrier to UK entry. |
| The union had been given a final chance to prevail against what had seemed insuperable odds. |
