Goethe's gift wasted? You really don't know, not having it (3,8)
I believe the answer is:
the foggiest
'you really don't know not having it' is the definition.
('I haven't the foggiest')
'goethe's gift wasted?' is the wordplay.
'wasted?' indicates an anagram.
'goethes'+'gift'='goethesgift'
'goethesgift' is an anagram of 'THE FOGGIEST'.
I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.