Meaning of insurmountable

in•sur•mount•a•ble

Pronunciation: (in"sur-moun'tu-bul), [key]
— adj.
  1. incapable of being surmounted, passed over, or overcome; insuperable: an insurmountable obstacle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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