1. erstwhile, former, old, one-time, onetime, quondam, sometime

belonging to some prior time

Example Sentences:
'erstwhile friend'
'our former glory'
'the once capital of the state'
'her quondam lover'

Synonyms

• former
• old
• one-time
• onetime
• quondam
• sometime

2. at one time, erst, erstwhile, formerly, once

at a previous time

Example Sentences:
'at one time he loved her'
'her erstwhile writing'
'she was a dancer once'

Synonyms

• at one time
• erst
• formerly
• once