Call somebody names
Definition 1 of 1
Pro Tip 1/3Emotional Impact
This phrase often hurts feelings and can be taken personally; it's not polite or kind. 
When he started to call her names, she felt very upset and told the teacher.
Pro Tip 2/3Often Childish
'Calling names' is seen as immature behavior, more common among children than adults. 
Even in the heated debate, the politician refrained from calling his opponent names.
Pro Tip 3/3Cyberbullying Context
In the digital age, 'calling names' online is considered cyberbullying and is equally harmful. 
She was distraught to find that her classmates were calling her names in a group chat.