inert
ih-NURTadjMeaning not moving or acting; without energy or force
Memory hook IN the DIRT: in-ERT. The puppy barks and barks at the big rock lying in the dirt, but the rock never moves: it is inert.
The cat lay inert on the warm windowsill all afternoon.
In context The robot had worked for hours, but once its battery ran down it sat inert in the corner, not stirring even when the children called its name.
Similar motionless, still, inactive, lifeless
Opposite active, lively, moving
From Latin iners, “unskilled, idle”: in- (without) + ars (skill, art).