verb·b1

klopfen

To knock or tap (on something); to knock at a door/window

Da klopft jemand ans Fenster.

Klopf an!

Forms

infinitiveklopfen

to knock / to tap

present ichich klopfe

I knock / I am knocking

present erer klopft

he knocks

perfekthat geklopft

has knocked

prateritumklopfte

knocked (simple past)

imperativKlopf!

Knock! (imperative)