verb
to throw down, to knock off
B1
runterwerfen is a separable strong verb meaning 'to throw down' or 'to knock off'. Prefix 'runter' separates in main clauses (du wirfst es runter). Auxiliary: haben (Perfekt: hast runtergeworfen). Irregular: stem change e→i (du wirfst; er wirft), Präteritum warf, Partizip runtergeworfen.
Examples
Er hat die Tasse aus Versehen runtergeworfen.
He accidentally threw the cup down.
Ich habe das Buch runtergeworfen.
I threw the book down.
Ich werfe den Ball runter.
I throw the ball down.
Details
Mnemonics
Picture someone tossing a cup off a table — it goes 'runter' (down) as it's 'geworfen'.
Think 'runter' = 'down' + 'werfen' = 'to throw' (like 'throw down').
Notes
A separable verb: in finite present tenses the prefix 'runter' separates (z. B. 'ich werfe die Tasse runter'). Past participle commonly 'runtergeworfen' (or more formally 'heruntergeworfen'). Uses 'haben' in perfect tenses.