The social worker with a good book (3)
I believe the answer is:
ant
'the social worker' is the definition.
(I've seen this before)
'with a good book' is the wordplay.
'with' says to put letters next to each other.
'good book' becomes 'nt' (I've seen this in other clues. I am not sure about the 'good' bit.**).
'a' next to 'nt' is 'ANT'.
Can you help me to learn more?
(Other definitions for ant that I've seen before include "Social worker" , "one living in colonies" , "Dec's long-time partner" , "Emmet or pismire" , "Worker on the hill" .)