A bed you don't want to leave (6)
I believe the answer is:
litter
'a bed' is the definition.
(thesaurus)
'don't want to leave' is the wordplay.
'don't want' becomes 'ret' (I can't justify this - if you can you should give a lot more credence to this answer).
'to' becomes 'til' (I've seen this in another clue).
'leave' is a reversal indicator (I've seen 'left' mean this).
'ret'+'til'='rettil'
'rettil' reversed gives 'LITTER'.
'you' acts as a link.
Can you help me to learn more?
(Other definitions for litter that I've seen before include "Odds and ends of rubbish left lying about" , "Little pigs, for example" , "Do the kittens create rubbish?" , "Sow's young" , "Rubbish left in public places" .)