пробы́ть

fairly common #2261

verbperfective imperfective is пробыва́ть

1.
to stay, to remain, to spend (time somewhere)
Мы пробы́ли в Москве́ три дня.
We stayed in Moscow for three days.
Perfective; implies a definite, bounded period spent in a place.
2.
to be (for a time), to serve (as)
Он пробы́л дире́ктором пять лет.
He was director for five years.
With a predicate noun or state: how long someone was something.

Examples

Мы пробыли здесь всю ночь.
We were here all night.
Я пробу́ду ещё трое суток.
I'll stay for three more days.
Сколько ты собира́ешься здесь пробы́ть?
How long are you going to be down there for?
Мы здесь пробу́дем до вечера.
We're going to be here all afternoon.
Я не пробу́ду здесь долго.
I won't be here long.
Я пробыл с ними час.
I was with them for an hour.
Ты долго здесь пробу́дешь?
How long are you going to stay here?
Вы долго с нами пробу́дете?
How long will you be staying with us?

Imperative
ты	пробу́дь
вы	пробу́дьте

Active present	-
Active past	пробы́вший	having stayed, who has stayed, who has been
Passive present	-
Passive past	-
Gerund present	-
Gerund past	пробы́в пробывши	while doing (past)