inert

She had never seen Marilla sit limply inert like that.

And yet they are inert.

I sprang to my feet, my inert hand grasping my pistol, my mind paralyzed by the dreadful shape which had sprung out upon us from the shadows of the fog.

Edmond shuddered when he heard the painful efforts which the old man made to drag himself along; his leg was inert, and he could no longer make use of one arm.