erstwhile

同义词

• bygoneadj.过去的
• oldadj.以前的
• onetimeadj.以前的
• pastadj.以往的
• previousadj.以前的

• aforetime
• already
• before
• beforetime
• earlier
• former
• formerly
• late
• once
• previously
• quondam
• sometime
• whilom

• at one time
• erst
• one-time

反义词

• currentadj.现在的
• presentadj.目前的