Fabulous way to stop opponent
I believe the answer is:
knockout
This could be a double definition.
'fabulous way' is the first definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe there's an association between them I don't understand?
'stop opponent' is the second definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'to' acts as a link.
Can you help me to learn more?
(Other definitions for knockout that I've seen before include "Boxing blow" , "beauty!" , "Stun - defeat - destroy" , "stunner" , "Incredibly OK" .)