Do, being worried for a start, have an intuition (10)
I believe the answer is:
foreboding
'an intuition' is the definition.
(thesaurus)
'do being worried for a start' is the wordplay.
'worried' indicates an anagram.
'a start' means one lot of letters go next to another.
'do'+'being'='dobeing'
'dobeing' with letters rearranged gives 'eboding'.
'eboding' after 'for' is 'FOREBODING'.
'have' acts as a link.
(Other definitions for foreboding that I've seen before include "Presentiment" , "ominous" , "In apprehension" , "Premonition" , "Warning" .)