Immaculate paths at last weed-free? (8)
I believe the answer is:
spotless
'immaculate' is the definition.
(synonyms)
'paths at last weed-free?' is the wordplay.
I cannot quite understand how this works, but
'weed' could be 'pot' (synonyms) and 'pot' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for spotless that I've seen before include "How Lady Macbeth wanted to be" , "What unsuccessful twitchers do" , "Without a mark, completely clean" , "totally innocent" , "honest!" .)