Topless worker occasionally cuddling former partner without desire (7)
I believe the answer is:
asexual
'partner without desire' is the definition.
I can't judge whether this definition defines the answer.
'topless worker occasionally cuddling former' is the wordplay.
'topless' means to remove the first letter.
'worker occasionally' becomes 'casual' (a casual worker works from time to time).
'cuddling' is an insertion indicator (inserted letters are cuddled or held).
'former' becomes 'ex' (prefix meaning former or onetime).
'casual' with its first letter taken away is 'asual'.
'asual' going around 'ex' is 'ASEXUAL'.
Can you help me to learn more?
(Other definitions for asexual that I've seen before include "Neither male nor female" , "Spurning Congress" , "Without functioning organs of reproduction" , "(Of reproduction) vegetative" , "Neuter" .)