End up with European language lacking nuance initially (6)
I believe the answer is:
finish
'end up' is the definition.
(synonyms)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for finish that I've seen before include "Perfect" , "Conclude, end" , "Bring to an close" , "End or terminus" , "Terminate, conclude" .)