This is the 13718th most frequent Russian word.
нерабочий
"Нерабочий" means "non-working" or "out of order."
Here, 'нерабочий' is used as an adjective describing the current state of the device as non-functional.
Этот прибор сейчас нерабочий.
This device is currently non-functional.
Here, 'нерабочий' is used as an adjective describing the status of the day as one without work.
На заводе объявили нерабочий день.
The factory announced a non-working day.
In this example, 'нерабочий' describes the button as not functioning properly.