[call] {sb} names

to intentionally refer to someone using unpleasant or offensive words

Bullying is wrong, and calling someone names is hurtful and harmful.
The siblings had a disagreement, and the younger one started calling his brother names.
In a heated argument, people sometimes resort to calling each other names.
She regretted calling her sister names during their disagreement.
She lost her temper and resorted to calling her co-worker names, which strained their relationship.