Level 5 · word 11,134 of 20,000

erstwhile

/ˈɜːrsˌtwaɪl/ American
  • adj. 以前的, 往昔的
Definition
  • adj. that used to be, former
Example
Her erstwhile business partner now works for a rival company.
她以前的生意伙伴现在在一家竞争对手公司工作。