prior, former, previous; see former, past 1.
"onetime." YourDictionary, n.d. Web. 11 October 2018. <http://thesaurus.yourdictionary.com/onetime>.
onetime. (n.d.). Retrieved October 11th, 2018, from http://thesaurus.yourdictionary.com/onetime
Having been such previously:
Yes, I'd like to receive Word of the Day emails from YourDictionary.com
By continuing, you agree to our
Please set a username for yourself.
People will see it as Author Name with your public flash cards.