Put off vehicles I had returned by foot finally (8)
I believe the answer is:
distract
'put off' is the definition.
(distracting is a kind of putting off)
'vehicles i had returned by foot finally' is the wordplay.
'vehicles' becomes 'carts' (cart is a kind of vehicle**).
'i had' becomes 'id' (I'd).
'returned' shows that the letters should be reversed in order.
'by' says to put letters next to each other.
'finally' suggests the final letters.
The last letter of 'foot' is 't'.
'carts'+'id'='cartsid'
'cartsid' written backwards gives 'distrac'.
'distrac'+'t'='DISTRACT'
(Other definitions for distract that I've seen before include "Divert (attention) from something" , "Confuse" , "Subject to diversion" , "Divert attention or bewilder" , "Side track" .)