Bug in an outbuilding avoided (7)
I believe the answer is:
shirked
'avoided' is the definition.
(shirking is a kind of avoiding)
'bug in an outbuilding' is the wordplay.
'bug' becomes 'irk' (I've seen this in another clue).
'in' means one lot of letters goes inside another.
'an outbuilding' becomes 'shed' (outbuilding in a garden).
'irk' placed into 'shed' is 'SHIRKED'.
(Other definitions for shirked that I've seen before include "Avoided dealing with" , "Avoided work selfishly or unfairly" , "ducked" .)