| He slumped in his chair, drained by the unsurmountable odds stacked against him. |
| He certainly wishes to get across the message that any side-effects problems hopefully are not unsurmountable. |
| He then put together another double to extend his lead after the 8th frame to an unsurmountable 30 pins. |
| Nuclear fusion is a technology that may never mature, because of unsurmountable technical problems such as heat resistance of materials. |
| Behind her rose more forest, followed by mountains, all high and unsurmountable. |
| I felt that I was blessed with a situation I'd been seeking all my life, but with emotional dilemmas that seemed completely unsurmountable. |
