Suitable, fitting (3)
I believe the answer is:
apt
This clue is a double definition.
'suitable' is the first definition.
(apt means appropriate or fitting)
'fitting' is the second definition.
(both mean appropriate)
(Other definitions for apt that I've seen before include "Relevant" , "Fitting - inclined" , "Appropriate for Pat" , "Suitable or likely" , "Train" .)