Super Indian making comeback, regularly getting bye (5)
I believe the answer is:
adieu
'bye' is the definition.
(synonyms)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for adieu that I've seen before include "Farewell, ami!" , "Goodbye in France" , "Cheerio" , "Farewell, Monsieur!" , "Au revoir (to a kind friend?)" .)