Crossword Genius

Genuine software reportedly a setback (7)

Ross

I believe the answer is:

relapse

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'setback' is the definition.
(I've seen this in another clue)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for relapse that I've seen before include "Fall ill again after rallying" , "go back" , "Regress, fall back" , "Get into bad habits again" , "falling back" .)

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