Deli's parking terrible: drive away (6)
I believe the answer is:
dispel
'drive away' is the definition.
(synonyms)
'deli's parking terrible' is the wordplay.
'parking' becomes 'p' (abbreviation on road signs).
'terrible' indicates anagramming the letters.
'delis'+'p'='delisp'
'delisp' is an anagram of 'DISPEL'.
(Other definitions for dispel that I've seen before include "Make disappear, doubts perhaps" , "Get rid of" , "Drive away and scatter" , "Make (feeling) disappear" , "'Disperse, clear away (6)'" .)