Swirling mist hides the way forward (8)
I believe the answer is:
immodest
'forward' is the definition.
(thesaurus)
'swirling mist hides the way' is the wordplay.
'swirling' indicates anagramming the letters.
'hides' is an insertion indicator.
'the way' becomes 'mode' (synonyms).
'mist' is an anagram of 'imst'.
'imst' enclosing 'mode' is 'IMMODEST'.
(Other definitions for immodest that I've seen before include "bold" , "Lacking due decency" , "Not humble or decorous" , "Pretentious" , "Cheeky" .)