[im-pas-uh-buh
l, -pah-suh-] 
| 1. | not passable; not allowing passage over, through, along, etc.: Heavy snow made the roads impassable. |
| 2. | unable to be surmounted: an impassable obstacle to further negotiations. |
| 3. | (of currency) unable to be circulated: He tore the bill in half, making it impassable. |
| im·pass·a·ble (ĭm-pās'ə-bəl) adj. Impossible to pass, cross, or overcome: impassable roads; impassable problems. im·pass'a·bil'i·ty, im·pass'a·ble·ness n., im·pass'a·bly adv. |
