This is the 5560th most frequent Polish word.
umów
"Umów" means "arrange" or "agree" (imperative form).
In this sentence, 'umówmy' is used in the imperative form for 'let's arrange' or 'let's plan', indicating a suggestion or invitation to make an arrangement together.
Umówmy się na obiad w przyszłym tygodniu.
Let's schedule a lunch for next week.
Here, 'umówić' is used as an infinitive, meaning 'to arrange' or 'to schedule', referring to organizing an appointment on behalf of someone.
Czy możesz umówić mnie na wizytę u lekarza?
Can you schedule me for a doctor's appointment?
In this context, 'umówiono się' is in the past tense and passive voice, meaning 'it was agreed', indicating a completed agreement or arrangement.