Simple point, say, to change (4)
I believe the answer is:
easy
'simple' is the definition.
(associated in meaning)
'point say to change' is the wordplay.
'point' becomes 'e' (compass point).
'to change' indicates anagramming the letters.
'say' with letters rearranged gives 'asy'.
'e'+'asy'='EASY'
(Other definitions for easy that I've seen before include "Requiring little effort" , "Facile" , "Undemanding" , "Obliging; go carefully" , "Effortless, uncomplicated" .)