Cannot work across street in stable (8)
I believe the answer is:
constant
'stable' is the definition.
(I've seen this before)
'cannot work across street' is the wordplay.
'work' indicates an anagram.
'across' indicates putting letters inside.
'street' becomes 'st'.
'cannot' anagrammed gives 'conant'.
'conant' going around 'st' is 'CONSTANT'.
'in' acts as a link.
(Other definitions for constant that I've seen before include "Endless" , "Persistent and unchanging" , "Faithful - unchanging" , "exactly as before" , "Recurring and unchanging" .)