Pointless isolated life, empty (4)
I believe the answer is:
idle
This clue might be a double definition.
'pointless' is the first definition.
(I've seen this in another clue)
'isolated life empty' is the second definition.
'idle' can be an answer for 'empty' (I've seen this before). I am unsure of the 'isolated life' bit.
Can you help me to learn more?
(Other definitions for idle that I've seen before include "not working in > lounge" , "no longer employed?" , "Run out of gear" , "'Lazy, not doing anything (4)'" , "Lazy, doing nothing" .)