fillip
noun [ C usually singular ] uk/ˈfɪl.ɪp/ us/ˈfɪl.ɪp/
（起推动作用的）刺激物
something that causes a sudden improvement
The athletics win provided a much-needed fillip to/for national pride. 体育竞赛的获胜激发了人们殷切需要的民族自豪感。
The news gave the stock market a big fillip. 这条消息极大地振奋了股市。
Synonym: bonus