Edward takes financial responsibilities to be boring (7)
I believe the answer is:
tedious
'be boring' is the definition.
(synonyms)
'edward takes financial responsibilities' is the wordplay.
'edward' becomes 'ted'.
'takes' means one lot of letters go next to another.
'financial responsibilities' becomes 'ious' (I can't explain this - if you can you should give a lot more credence to this answer).
'ted'+'ious'='TEDIOUS'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for tedious that I've seen before include "Humdrum" , "not exciting" , "drab" , "not worth listening to?" , "flat" .)