Used to describe a state of not being active, often in formal or technical contexts such as accounts, memberships, or systems. Less common in casual speech than alternatives like 活動していない.
Accounts that have been inactive for a long period may be deleted.
If the inactive state continues, the system will automatically log you out.
不活動 is a near-synonym also meaning 'inactivity', but 非活動 is more common in modern technical usage. 不活動 may appear in medical or biological contexts.
inactive window
Formed from the prefix 非 (hi-, 'non-') and 活動 (katsudō, 'activity'). The prefix 非 is commonly used to create nouns meaning 'non-' or 'in-', as in 非公開 (hikōkai, 'private, not open to the public').