Did a summer's work around lake, getting spoiled (6)
I believe the answer is:
addled
'spoiled' is the definition.
(addling is a kind of spoiling)
'did a summer's work around lake' is the wordplay.
I cannot really see how this works, but
'did' could be 'led' (leading is a kind of doing) and 'led' is located in the answer.
'a' is present in the answer.
This explanation may well be incorrect...
'getting' is the link.
Can you help me to learn more?
(Other definitions for addled that I've seen before include "Gone bad (of eggs)" , "Confused like rotten egg" , "Baffled - rotten" , "Perplexed -- rotten" , "became rotten" .)