Suitable means to an end (9)
I believe the answer is:
expedient
I believe this is a double definition.
'suitable' is the first definition.
(I've seen this before)
'means to an end' is the second definition.
(thesaurus)
(Other definitions for expedient that I've seen before include "Extend pie - it is suitable for its purpose" , "Practical - advantageous" , "Appropriate, convenient" , "Advantageous rather than right or just" , "Opportune" .)