idle
/ˈaɪdəl/adjective, verb, noun★Intermediate— inactive
informal
Not active or not in use.
The idle machinery gathered dust.
The machinery that is not being used collected dust.
She spent an idle afternoon reading magazines.
She spent a leisurely, unproductive afternoon reading magazines.
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Commonly used as an adjective to describe objects, places, or periods without activity.
informal
To avoid work or activity; to spend time doing nothing.
He idled away the weekend playing video games.
He spent the weekend doing nothing productive, just playing video games.
Don't idle while the traffic light is red; prepare your next move.
Instead of standing still, use the red light time to plan.
English Dictionary