Lend, going crazy with a loan for everyone! (3,3,3)
I believe the answer is:
one and all
'everyone' is the definition.
(thesaurus)
'lend going crazy with a loan' is the wordplay.
'going crazy with' is an anagram indicator.
'a'+'loan'='aloan'
'lend' anagrammed with 'aloan' makes 'ONE AND ALL'.
'for' is the link.
(Other definitions for one and all that I've seen before include "Everybody without exception" , "Absolutely everybody" , "Everyman" .)