Honour leading pairs of actors, covering last decade (8)
I believe the answer is:
accolade
'honour' is the definition.
(synonyms)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for accolade that I've seen before include "Tribute expressing great approval" , "Special recognition of merit" , "Praise or approval - or elevation to knighthood" , "Praise, as in conferring knighthood" , "Great praise or elevation to knighthood" .)