An enfant terrible.
enfant terrible definition by Webster's New World
- an unmanageable, mischievous child
- anyone constantly vexing, startling, or embarrassing others, as, in the arts, by outraging conventional opinion or expectations
enfant terrible definition by American Heritage Dictionary
noun en·fants ter·ri·bles
Origin: French : enfant, child + terrible, frightful.
enfant terrible - Cultural Definition
A person who stirs things up in an irresponsible or indiscreet way or has unconventional ideas: “Doctor Hill keeps writing articles that criticize his fellow physicians; he is becoming known as the enfant terrible of his profession.” From French, meaning “terrible child.”