Careless indiscretions by husband to cheat around (8)
I believe the answer is:
slipshod
'careless' is the definition.
(similar in meaning)
'indiscretions by husband to cheat around' is the wordplay.
'indiscretions by' becomes 'slips' (I can't justify this - if you can you should believe this answer much more).
'husband' becomes 'h'.
'to cheat' becomes 'do'.
'around' says the letters should be written backwards.
'do' written backwards gives 'od'.
'slips'+'h'+'od'='SLIPSHOD'
Can you help me to learn more?
(Other definitions for slipshod that I've seen before include "Careless in thought or organisation" , "Sloppy, careless" , "Loose" , "Carelessly done" , "Sloppy and haphazard" .)