Emulate (5)
'emulate' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rival that I've seen before include "Challenger, competitor" , "Someone you hope to defeat" , "Emulate" , "Be equal to in quality" , "Competing opponent" .)
'emulate' is the definition.
(I know that emulate is a kind of copy)
This is all the clue.
(Other definitions for copy that I've seen before include "Mimic" , "Imitation or reproduction" , "Material to be printed" , "Facsimile" , "Replica; text for printing" .)