From sum (“I am”) + ubi (“in colloquial language: in which, by which, with which, wherewith; with whom, by whom”).
- sometimes, sometime or another, one day
- the play Pseudolus by T. Maccius Plautus (the text may be read here)
- Simo: Erit ubi te ulciscar, si vivo.
- Pseudolus: Quid minitare? Habeo tergum.
- Simo: There will be an opportunity for me to be revenged on you one day, if I live.
- Pseudolus: Why do you threaten? I've got a back of my own.