| 1 | So long as he stayed there his position was unassailable. | |
| 2 | The proposition is simple and straightforward, and its equities unassailable. | |
| 3 | And, in the case of GM crops and food, the safety record is impeccable. | |
| 4 | Giant hydropower companies, with impeccable political connections, add their own layer of secrecy. | |
| 5 | During the antitrust trial, Bill Gates repeatedly denied that Microsoft's dominance was unassailable. |