Resourceful relatives adapted (9)
I believe the answer is:
versatile
'resourceful' is the definition.
(thesaurus)
'relatives adapted' is the wordplay.
'adapted' is an anagram indicator.
'relatives' anagrammed gives 'VERSATILE'.
(Other definitions for versatile that I've seen before include "Adapting easily to different tasks" , "Relatives able to do many things" , "willing to fit in?" , "variable" , "Adaptable like relatives" .)