downtime
noun [ U ]
uk/ˈdaʊntaɪm/ us IT
the time during which a machine, especially a computer, is not working or is not able to be used:
Slow download times, inadequate security and website downtime can damage your business plan.
PRODUCTION
time when a business does not operate, for example when machines break down or there is no work to do:
For plant workers who endured weeks of downtime last year, the rebound in the market is a big relief.
time when you relax and do not do very much, especially time when you are not at work:
He wanted to be able to spend his downtime on the beach.