idling
Definitions
Spending time doing nothing or moving aimlessly.
Running an engine at a low speed while the vehicle is not in motion.
Being in a state of inactivity or not in use.
Examples
The truck was idling outside the warehouse while the driver checked the manifest.
He spent the afternoon idling away his time in the park instead of finishing his project.
The engine was idling roughly, suggesting that the spark plugs needed to be replaced.
Synonyms
inactive dormant stagnant resting stationary unoccupied sluggish
Antonyms
active busy working productive operating functioning dynamic