Went over cruel hill (4)
I believe the answer is:
fell
I believe this clue is a triple definition!
'went over' is the first definition.
(fell over)
'cruel' is the second definition.
(fell can mean cruel or formidable)
'hill' is the third definition.
(I know that fell is a type of hill)
(Other definitions for fell that I've seen before include "Abated" , "Collapsed; hill" , "Cause to tumble down < hill" , "Toppled" , "Came down - cut down" .)