A way of speaking about daughter’s drug habit (9)
I believe the answer is:
addiction
'drug habit' is the definition.
'addiction' can be an answer for 'habit' (drug habit). I'm not sure about the 'drug' bit.
'a way of speaking about daughter's' is the wordplay.
'way of speaking' becomes 'diction' (I've seen this before).
'about' says to put letters next to each other.
'daughter' becomes 'd' (genealogical abbreviation).
'diction' after 'd' is 'ddiction'.
'a'+'ddiction'='ADDICTION'
Can you help me to learn more?
(Other definitions for addiction that I've seen before include "Something to kick" , "Bug one's caught" , "Drug-habit" , "I did act on (anag.)" , "Obsession" .)