1. 发脾气;耍性子
If a child has a tantrum, they lose their temper in a noisy and uncontrolled way. If you say that an adult is throwing a tantrum, you are criticizing them for losing their temper and acting in a childish way.

1. a display of bad temper

e.g. he had a fit
she threw a tantrum
he made a scene

Synonym: fitsceneconniption