... a sod with drawl developing signs of dementia? (4,5)
I believe the answer is:
word salad
'signs of dementia?' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'a sod with drawl developing' is the wordplay.
'with' means one lot of letters go next to another.
'developing' is an anagram indicator.
'a'+'sod'='asod'
'asod' put after 'drawl' is 'drawlasod'.
'drawlasod' is an anagram of 'WORD SALAD'.
Can you help me to learn more?
(Another definition for word salad that I've seen is " Confused outpouring".)