Sporadic/spəˈrædɪk/ Definition 1 of 3Pro Tip 1/3Not Predictable Sporadic events can be surprising as they don't follow a pattern. Her sporadic work attendance kept her colleagues guessing. Pro Tip 2/3No Routine Use 'sporadic' when something doesn't happen at set times. My sporadic gym visits didn't help me lose weight. Pro Tip 3/3Not Constant 'Sporadic' suggests a lack of consistency and regularity. Power outages are sporadic during heavy storms.