Crossword Genius

Called around six? That’s crazy! (6)

Ross

I believe the answer is:

raving

'crazy' is the definition.
(thesaurus)

'called around six?' is the wordplay.
'called' becomes 'rang' ('ring' can be a synonym of 'call').
'around' is an insertion indicator.
'six?' becomes 'vi' (roman numeral).
'rang' placed around 'vi' is 'RAVING'.

'that's' acts as a link.

(Other definitions for raving that I've seen before include "Mad" , "Declaiming wildly" , "Wildly incoherent" .)

I've seen this clue in The Times.
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