Daredevils dismiss deed by competitive opponents (6)
I believe the answer is:
rivals
'opponents' is the definition.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for rivals that I've seen before include "Persons in competition with each other" , "Play by 1" , "Competitors or adversaries" , "Opposing contestants" , "Opponents or competitors" .)