insurmountable

Six points from two games or four points in the right order - one against Greece, three against Denmark - doesn't seem insurmountable when Scotland have already achieved 10 points in four games.

With more than 1,200 pages to plough through, it's often regarded as the Everest of literature with prose as insurmountable as the famed peak.

Learning a musical instrument can be an arduous journey, one often fraught with blistered fingers, frayed patience and what can seem like an endless series of insurmountable hurdles.

Orderlies were clearing rubble from buildings, without sleep for days facing an insurmountable challenge.

In a sharply polarized, narrowly divided chamber, that has become an almost insurmountable hurdle for all but the most bipartisan bills.