Unblockable

Thus it will be seen that, although its detractors do all they can to discourage the use of oil for fuel, its superiority is so great that in spite of its traducers it is forging to the front with mighty, unblockable strides.

The unblockable actions consist of evaluating an expression and performing an assignment.

He had the soft fadeaway jumper that was virtually unblockable and usually on target, and the face-up fifteen-footer, which he used to soften up the inside.