On return lived month with vehicle, English, not worrying at all? (5-3-4)
I believe the answer is:
devil-may-care
'not worrying at all?' is the definition.
(as in a devil-may-care attitude)
'on return lived month with vehicle english' is the wordplay.
'on return' says the letters should be written backwards.
'month' becomes 'may' (May is an example).
'with' says to put letters next to each other.
'vehicle' becomes 'car' (car is a kind of vehicle).
'english' becomes 'e' (abbreviation).
'lived' written backwards gives 'devil'.
'devil'+'may'+'car'+'e'='DEVIL-MAY-CARE'
(Other definitions for devil-may-care that I've seen before include "Cavalier" , "Insouciant (attitude)" , "Cheerfully reckless" , "Reckless, audacious" , "Reckless - mediaeval cry (anag)" .)