sporadic /spə-, spo-radˈik/ or (rare) sporadical /-kəl/

1. Scattered
2. Occurring here and there or now and then
3. Occurring casually

sporadˈically adverb

• shale
• shaled
• shale gas
• shale mine
• shale-miner
• shale-miners
• shale mines
• shale oil
• shales
• shalier
• shaliest
• shaling
• shall
• shalli
• shallon
• shallons
• sliminesses
• sliming
• slimline
• slimly
• slimmed
• slimmed-down
• slimmer
• slimmers
• slimmers' disease