gloating

/ˈɡləʊtɪŋ/
~ (about/at/over sth)to show that you are happy about your own success or sb else’s failure, in an unpleasant way 扬扬得意；沾沾自喜；幸灾乐祸 SYN crow
She was still gloating over her rival’s disappointment.
她仍在为对手的失望而幸灾乐祸。