Difficulty saying address is next to desert (6,6)
I believe the answer is:
speech defect
'difficulty saying' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'address is next to desert' is the wordplay.
I cannot really understand how this works, but
'address' could be 'speech' (synonyms) and 'speech' is present in the answer.
'desert' could be 'defect' (synonyms) and 'defect' is present in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for speech defect that I've seen is " vocal complaint".)