erstwhile

Adjective

• belonging to some prior time
  • erstwhile friend
    
  • our former glory
    
  • the once capital of the state
    
  • her quondam lover
    

Adverb

• at a previous time;
  • at one time he loved her
    
  • her erstwhile writing
    
  • she was a dancer once
    

Related words

• Synonyms: 
  erstwhile(a) , former(a) , old , onetime(a) , one-time(a) , quondam(a) , sometime(a) , once , formerly , at one time , erst