Tiresome work outside (7)
I believe the answer is:
tedious
'tiresome' is the definition.
(I know that tiresome can be written as tedious)
'work outside' is the wordplay.
'work' is an anagram indicator.
'outside' anagrammed gives 'TEDIOUS'.
(Other definitions for tedious that I've seen before include "Outside (anag.)" , "not exciting" , "not worth listening to?" , "Wearisome, boring" , "Humdrum" .)