Heroes sit around making conjectures (9)

I believe the answer is:

theorises

'conjectures' is the definition.
(I know this)

'heroes sit around' is the wordplay.
'around' indicates an anagram.
'heroes'+'sit'='heroessit'
'heroessit' is an anagram of 'THEORISES'.

'making' is the link.

(Another definition for theorises that I've seen is " Speculates".)

I've seen this clue in The Times.

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