It's futile being blunt? (9)
I believe the answer is:
pointless
This clue is a double definition.
'it's futile' is the first definition.
(thesaurus)
'being blunt?' is the second definition.
('pointless' can be similar in meaning to 'blunt')
(Other definitions for pointless that I've seen before include "Having no bits of news" , "Having little use" , "Single-track railway might be so" , "having scored zero" , "Serving no purpose" .)