Collocation Dictionary
Common collocations with insurmountable in American Collocation
almost
apparently
seemingly
It is a seemingly insurmountable problem.
problem
barrier
challenge
difficulty
hurdle
obstacle
problem
task
This may seem like an insurmountable task to other people.
chance of something happening
odds
He overcame seemingly insurmountable odds to achieve his dream.
appear
be
prove
seem
You must be prepared to be flexible if the problems prove insurmountable.