1. not in operation; not functioning or working
2. not related to or involved in the actual operations or activities of an organization or system
Usage: often used in business or military contexts

Examples

• The factory's old machinery became nonoperational after years of heavy use.
• Several aircraft remained nonoperational due to maintenance issues.
• The nonoperational staff handled scheduling and payroll.
• The backup generator was nonoperational when the power outage occurred.
• Nonoperational expenses include office rent and administrative salaries.
• The system has been nonoperational since the software update failed.