Beat; loss (6)
I believe the answer is:
defeat
I believe this is a double definition.
'beat' is the first definition.
(synonyms)
'loss' is the second definition.
(I've seen this before)
(Other definitions for defeat that I've seen before include "best or worst" , "Beat, win against" , "Vanquish, win against" , "Conquest" , "Beat (an opponent)" .)