to feel or express great pleasure or satisfaction because of your own success or good luck, or someone else's failure or bad luck

She's continually gloating over/about her new job. 她一直在为获得了新工作而沾沾自喜。

I know I shouldn't gloat, but it really serves him right. 我知道自己不应该幸灾乐祸，可他真是活该。

His enemies were quick to gloat at his humiliation. 看到他受辱，他的对头们不失时机地表示幸灾乐祸。

[ + speech ] "This is our fourth victory in a row," he gloated. “这是我们连续第四场获胜了，”他洋洋得意地说。

an occasion when you gloat about something

to have a gloat at/over/about something 对某事洋洋得意（或幸灾乐祸）