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knallen

to slap, hit, to bang, go off, to have a strong effect

ˈk n a l ə n
knall to slap, hit + en infinitive / wir-sie present
verb · 1st-person plural / 3rd-person plural, present tense Rare #35,058
to slap, hit Colloquial; often used in the phrase „jemandem eine knallen“ (to slap someone).
GE: Er will seinem Bruder eine knallen.
EN: He wants to slap his brother.
to bang, go off
GE: Die Türen können laut knallen.
EN: The doors can bang loudly.
to have a strong effect Colloquial; often said of alcoholic drinks.
GE: Der Schnaps kann ganz schön knallen.
EN: The liquor can really pack a punch.
Conjugation of knallen
Indicative present
SingularPlural
First — knallen
Second — knallt
Third knallt knallen
Imperative
SingularPlural
Second knall knallt
knallen
Subjunctive present
SingularPlural
First — knallen
Third — knallen
Indicative past
SingularPlural
First knallte —
Third knallte —
Subjunctive past
SingularPlural
First knallte —
Third knallte —
Past
geknallt

Knallen wir ihn ab, greifen sie an.

If we shoot him down, they'll attack.

— Avatar: The Way of Water (2022)

Ich musste ihm heute fast eine knallen.

I almost had to slap him today.

— Do the Right Thing (1989)

Der Wein muss knallen, ganz wichtig.

The wine has to pack a punch—that’s very important.

— The Big Sick (2017)

Schüsse knallen.

Shots ring out.

— James Bond 007 - Casino Royale (2006)

Knallen wir uns die Birne zu und sehen uns Pornos an.

Let's get high and watch porn.

— Tatsächlich... Liebe (2003)

Lass was knallen, Alter!

Let’s make some noise, dude!

— Soul Kitchen (2009)

Du hättest Tom eine knallen sollen.

You should have smacked Tom.