erstwhile

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++erst·while /ˈɜːstwaɪl $ ˈɜːrst-/ adjective [only before noun] formal  BEFOREformer or in the past 以前的；过去的 She found herself ostracized by erstwhile friends. 她发现自己被以前的朋友排斥。 his erstwhile allies 他以前的盟友

Examples from the Corpus

erstwhile• He has won over many of his erstwhile critics.• The movie theatres were showing well-made and respectable films to a large public that included many of their erstwhile critics.• With her erstwhile host's kind permission, she reminded herself bitterly.• What were your options when an erstwhile love returned?• Others say she avenges herself of the insult offered by her erstwhile lover by luring fishermen and other sailors to their doom.• It was my erstwhile swain, looking much the same as 10 years earlier.• She certainly needed a cup of tea, even if her erstwhile visitor didn't.Origin erstwhile (1500-1600) erst “formerly” ((11-19 centuries)) (from Old English ærest “earliest”) + while

erst·while adjectiveChineseSyllable  

or in former past Corpus the

erstwhile
erst‧while /ˈɜːstwaɪl $ ˈɜːrst-/ adjective [only before noun] formalformer or in the past:
    She found herself ostracized by erstwhile friends.
    his erstwhile allies

erst·whileBrE /ˈɜːstwaɪl/ 🔊NAmE /ˈɜːrstwaɪl/ 🔊 adjective [only before noun] (formal) former; that until recently was the type of person or thing described but is not any more 以前的；先前的；过去的；往昔的◆an erstwhile opponent以前的对手◆His erstwhile friends turned against him. 他先前的朋友转而与他作对。🔊🔊