Criminally stupid? Very close (5,2,7)
I believe the answer is:
thick as thieves
'close' is the definition.
(thesaurus)
'criminally stupid? very' is the wordplay.
I cannot really understand how this works, but
'stupid?' could be 'thick' (similar in meaning) and 'thick' is found in the answer.
'very' could be 'v' (common abbreviation) and 'v' is present in the answer.
This explanation may well be incorrect...
(Another definition for thick as thieves that I've seen is " Friendly".)
I've seen this clue in The Guardian.
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