### Clue: Local hyenas intermittently entering ground emptied in clearance (2-5)
### Answer: GO-AHEAD 
 ### Explanation: Definition: clearance 
 **The 2nd, 4th, 6th, 8th, and 10th letters of**(… intermittently) "Local hyenas " **contained in**(entering) "ground" **minus all its internal letters**(emptied).
Defn: Approval to proceed with an action.