wunderkind
Concise Oxford English Dictionary © 2008 Oxford University Press:
wunderkind /ˈvʊndəkɪnd/
▶noun (pl. wunderkinds or wunderkinder /-kɪndə/) a person who achieves great success when relatively young.
– origin C19: from Ger., from Wunder ‘wonder’ + Kind ‘child’.
'wunderkind' also found in these Oxford entries:

