Usually getting the facts really garbled (9)
I believe the answer is:
generally
'usually' is the definition.
(thesaurus)
'the facts really garbled' is the wordplay.
'the facts' becomes 'gen'.
'garbled' indicates anagramming the letters.
'really' anagrammed gives 'erally'.
'gen'+'erally'='GENERALLY'
'getting' acts as a link.
(Other definitions for generally that I've seen before include "In most cases, as a general rule" , "In most cases, usually" , "Usually, as a rule" , "For the most part" , "as usual" .)