Financing it is silly, meaningless (13)
I believe the answer is:
insignificant
'meaningless' is the definition.
('insignificant' can be similar in meaning to 'meaningless')
'financing it is silly' is the wordplay.
'silly' indicates an anagram.
'financing'+'it'+'is'='financingitis'
'financingitis' is an anagram of 'INSIGNIFICANT'.
(Other definitions for insignificant that I've seen before include "Trivial" , "Of no consequence" , "Negligible" , "Irrelevant" , "Unimportant" .)