enfant terrible
Concise Oxford English Dictionary © 2008 Oxford University Press:
enfant terrible /ˌɒ̃fɒ̃ tɛˈriːbl(ə)/
▶noun (pl. enfants terribles pronunc. same) a person who behaves in an unconventional or controversial way.
– origin Fr., lit. ‘terrible child’.
'enfant terrible' also found in these Oxford entries:

