1. (adv.) At a past time indefinitely referred to; once; formerly.

2. (adv.) At a time undefined; once in a while; now and then; sometimes.

3. (adv.) At one time or other hereafter; as, I will do it sometime.

4. (a.) Having been formerly; former; late; whilom.

ancient any time before long by and by bygone early erstwhile eventually finally fore former immemorial in due time late old olden once one day one fine day one fine morning onetime past prehistoric previous primeval primitive prior quondam recent some fine day some sweet day someday somewhen soon sooner or later then ultimately whilom yet