Extinct Arawakan language group going to return (5)
I believe the answer is:
taino
'extinct arawakan language' is the definition.
'taino' can be an answer for 'language' (I have seen 'Archaic language' mean 'taino' so perhaps 'language' could also mean 'taino'). I'm unsure of the 'extinct arawakan' bit.
'group going to return' is the wordplay.
'group' becomes 'tai' (I am not sure about this - if you are sure you should believe this answer much more).
'going' becomes 'on' (both can mean functioning or activated).
'to return' shows that the letters should be reversed in order.
'on' in reverse letter order is 'no'.
'tai'+'no'='TAINO'
Can you help me to learn more?
(Other definitions for taino that I've seen before include "old language" , "Extinct language" , "Language Caribbean used to speak" , "Archaic language" .)