spiff someone/something up
phrasal verb with spiff verb uk/spɪf/ us/spɪf/
US informal
将…装扮一新;把…打扮得整齐漂亮;打扮
to make someone or something look more stylish, or cleaner and tidier
He's really spiffed up his wardrobe since he started his new job. 开始新工作之后，他把自己收拾得衣冠楚楚的。