outage
n. countable B2 Upper Intermediate US //ˈaʊtədʒ// UK //ˈaʊtɪdʒ// out·age
n. a period of time when a service is not working. This usually refers to things like electricity, the internet, or water.
n. a period during which a power supply or other public service is unavailable. Refers to a temporary suspension of utility or network operations.
The storm caused a major power outage in our neighborhood.
The bank apologized for the website outage that prevented customers from accessing their accounts all morning.
Engineers worked through the night to identify the software bug responsible for the global server outage that disrupted international communications for several hours.
From out + -age, on the model of shortage.
Usage
Often paired with descriptive nouns like 'power', 'internet', or 'network'.