Learner in bed showing little activity? (5)
I believe the answer is:
slack
'little activity?' is the definition.
The answer and definition can be both human attributes as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'learner in bed' is the wordplay.
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'in' means one lot of letters goes inside another.
'bed' becomes 'sack' (e.g. 'in the sack').
'l' put inside 'sack' is 'SLACK'.
'showing' is the link.
Can you help me to learn more?
(Other definitions for slack that I've seen before include "bits of coal" , "Flaccid" , "skive" , "Lax" , "Idle and disinclined to work" .)