Get up a slope (5)

I believe the answer is:

arise

'get up' is the definition.
('arise' can be a synonym of 'get up')

'a slope' is the wordplay.
'slope' becomes 'rise' (rise is a kind of slope**).
'a'+'rise'='ARISE'

(Other definitions for arise that I've seen before include "Crop up" , "result" , "Originate; get up" , "Happen" , "Occur; stand up" .)

I've seen this clue in The Telegraph.

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