Cropped up (5)
'cropped up' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for arisen that I've seen before include "(Has) cropped up" , "Gone up" , "Sprung up" , "It's appeared" , "Up on the rocks" .)
'cropped up' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for arose that I've seen before include "Cropped up" , "appeared" , "Occurred; stood up" , "Happened" , "Followed" .)