gleeful
adj. 愉快的，欢快的，幸灾乐祸的
例句
He took an almost gleeful delight in showing how wrong they can be.
他感到高兴，几乎是幸灾乐祸看他们出大错。
《柯林斯英汉双解大词典》
The victory inspired him to dispatch a gleeful telegram to Roosevelt.
胜利鼓舞了他发喜电给罗斯福。
He had a naughty schoolboy's gleeful disregard for rules.
他有顽皮小学生一样的对于无视规则的欣喜。
