Last weekend my husband and I went to the supermarket to do our weekly shopping and witnessed yet another unasked for and very unwelcome performance by a badly-mannered child, whose typical reaction to not getting what he/she wants is to throw tantrums.
You could call a kid that embarrasses his elders a terrible child, or you could use the French expression enfant terrible /ˌɒnfɒn teˈriːblə/ instead.
When the term first arrived in English in the mid-19th century, it was used to refer to unpredictable children who blurted out outrageous remarks that embarrassed their elders. By the 1930s, an enfant terrible could be anyone – regardless of their age – whose unconventional or shocking behaviour scandalised mainstream society.
Since his debut in the 1970s, he’s been the enfant terrible of British pop music.
These days the phrase is also often applied to young, successful newcomers who shock or scare old-timers with their new approaches, easy successes, or disregard for tradition.