1. In a sporadic manner
   - sporadically 
2. At regular time intervals

See also: periodical

• Pusey
• Puseyism
• push
• push around
• push aside
• push away
• push back
• push broom
• push button
• push down
• push forward
• push on
• push out
• push through
• push-bike
• push-button radio
• push-down list
• push-down queue
• push-down stack
• push-down storage
• push-down store
• push-pull
• Pushan
• pushball
• pushcart