In the past; formerly

ETYM Old Eng. ones, anes, an adverbial form from one, on, an, one. Related to One-, -Wards.
1. As soon as; SYN. when.
2. At a previous time; SYN. formerly, at one time.
3. On one occasion; SYN. one time, in one case.

At some indefinite or unstated time