A road with no exit; a cul-de-sac. / (figuratively) A deadlock or stalemate situation in which no progress can be made.

plural of impasse

(chiefly theology) Unable to suffer, or feel pain. / Unable to feel emotion; impassive. / Incapable of suffering injury or detriment. / Misspelling of impassable.

Having, or revealing, no emotion. / Still or motionless.

(of a route, terrain, etc.) Incapable of being passed over, crossed, or negotiated. / (of an obstacle) Incapable of being overcome or surmounted. / (of currency) Not usable as legal tender.

Filled with intense emotion or passion; fervent.

In an impassable manner.

In an impassive manner.

In an impassible manner.

The state or condition of being impassible.