Occupying berth, more troubled (8)
I believe the answer is:
bothered
'troubled' is the definition.
('bother' can be a synonym of 'trouble')
'occupying berth more' is the wordplay.
'occupying' is an insertion indicator.
'berth' becomes 'bed'.
'more' becomes 'other' (synonyms).
'bed' placed around 'other' is 'BOTHERED'.
(Other definitions for bothered that I've seen before include "Made an effort -- put out" , "The bored, strangely, can be troubled" , "Disturbed" , "Took the trouble to do something" , "Under stress" .)