Edward put up with endorsing planning (9)
I believe the answer is:
designing
'planning' is the definition.
('design' can be a synonym of 'plan')
'edward put up with endorsing' is the wordplay.
'edward' becomes 'Ed' (short for Edward).
'put up' says the letters should be written backwards.
'with' says to put letters next to each other.
'endorsing' becomes 'signing' (sign can mean to endorse or approve something).
'ed' reversed gives 'de'.
'de'+'signing'='DESIGNING'
(Another definition for designing that I've seen is " Acting in a calculating and deceitful way".)