Stably/ˈsteɪbli/ Definition 1 of 2Pro Tip 1/3Physical Stability Use 'stably' to describe something physically secure and unlikely to collapse or fail. The bridge is stably constructed to endure heavy traffic. Pro Tip 2/3Reliability Over Time 'Stably' suggests a long-lasting reliability or performance in a situation or system. This machine runs stably, with no breakdowns for years. Pro Tip 3/3Resistance to Change When something is 'stably' positioned, it resists sudden changes or disturbances. The government has remained stably in power for a decade.