in an angry, impatient, and rude way, especially about things that are not important

“The key's stuck and won’t move,” she said pettishly. “钥匙卡住了，动不了了，”她负气地说。

He pettishly pushed away his plate, and leant back in his chair. 他气呼呼地推开盘子，靠在椅子上。