Crossword Genius

With difficulty go and clue this dialect (6,3)

Ross

I believe the answer is:

langue doc

'dialect' is the definition.
(dialect of medieval French)

'with difficulty go and clue' is the wordplay.
'with difficulty' is an anagram indicator.
'go'+'and'+'clue'='goandclue'
'goandclue' with letters rearranged gives 'LANGUE DOC'.

'this' is the link.

(Another definition for langue doc that I've seen is " Form of medieval French".)

I've seen this clue in The Independent.
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