Lived with an old-fashioned boy having no employment (6)
I believe the answer is:
wasted
'having no employment' is the definition.
I can't tell whether this definition defines the answer.
'lived with an old-fashioned boy' is the wordplay.
'lived' becomes 'was' ('be' can be a synonym of 'live').
'with' says to put letters next to each other.
'an old-fashioned boy' becomes 'ted' (I've seen this before. I am not sure about the 'old-fashioned' bit.).
'was'+'ted'='WASTED'
Can you help me to learn more?
(Other definitions for wasted that I've seen before include "Squandered or withered" , "Used to no purpose" , "Dissipated; atrophied" , "three sheets to the wind" , "Squandered, dissipated" .)