завали́ть

fairly common #4386C2verbperfective imperfective is зава́ливать

1.
to fill up, to block up (with debris), to cover over, to bury
Вход в пеще́ру завали́ли камня́ми.
They blocked up the cave entrance with stones.
2.
to heap (with), to pile high (with), to swamp (with work)
Он завали́л стол кни́гами.
He piled the table high with books.
3.
to fail (an exam), to flunk, to botchcolloquial
Я завали́л экза́мен по физике.
I failed the physics exam.

Examples

Через па́ру минут у меня экза́мен, и я его точно завалю́.
I have an exam in a few minutes, and I’m definitely going to fail.
Том завали́л экза́мен по вожде́нию.
Tom failed to pass his driving test.
Том завали́л францу́зский в про́шлом семе́стре.
Tom failed French last semester.
Он завали́л экза́мен, потому что недостаточно занима́лся.
He failed the exam because he had not studied enough.
Я завали́л хи́мию.
I failed chemistry.
Друг, кото́рый, как я счита́л, сдаст экза́мен, на де́ле его завали́л.
The friend who I thought would pass the exam failed it.
Они завали́ли экза́мен.
They failed the exam.
Обрушенная стена завалила весь двор.
The collapsed wall had buried the entire courtyard.

Note: Stress change.

Imperative
ты	завали́
вы	завали́те

Active present	-
Active past	завали́вший	having failed (an exam), having flunked
Passive present	-
Passive past	зава́ленный	piled up, littered, covered, strewn
Gerund present	заваля́	while doing (present)
Gerund past	завали́в заваливши	while doing (past)

вали́тьto knock down; to fell (trees); to dump; to shift (blame) onto; to get out; to stream
verbimperfective
ввали́тьto heave in; to pour in (money); to barge in
verbperfective
ували́тьto knock down
verbperfective
вали́тьсяto fall down; to go wrong
verbimperfective
взвали́тьto load
verbperfective

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(Derived from вали́ть.)

Verb	Prefix	Meaning
завали́ть	за-	to fill up; to heap (with); to fail (an exam)
завали́ться	за-	to fall behind (something); to collapse; to flop down to sleep; to fail (an exam)

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