Crossword Genius

Craziest club: try to get one admitted (8)

Ross

I believe the answer is:

battiest

'craziest' is the definition.
(batty can informally mean mad)

'club try to get one admitted' is the wordplay.
'club' becomes 'bat' (as in sporting equipment).
'try' becomes 'test' (synonyms).
'to get' says to put letters next to each other.
'one' becomes 'i' (Roman numeral).
'admitted' is an insertion indicator.
'bat'+'test'='battest'
'battest' enclosing 'i' is 'BATTIEST'.

I've seen this clue in The Times.
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