Crossword Genius

Being hampered, made painful progress (7)

Ross

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'progress' is the definition.
Although both the answer and definition are verbs in their base form, I can't see how one could define the other.

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(Other definitions for agonise that I've seen before include "Torment oneself" , "Suffer anguish - go in sea (anag)" , "Labour" , "Struggle mentally" , "rack" .)

I've seen this clue in The Irish Independent.
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