
umlegen
to pass on
To transfer or distribute costs or expenses to someone else.
Der Vermieter versucht, die Kosten für die Renovierung auf die Mieter umzulegen.
The landlord is trying to pass the renovation costs on to the tenants.
to pass on / flip / move
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to pass on
To transfer or distribute costs or expenses to someone else.
Der Vermieter versucht, die Kosten für die Renovierung auf die Mieter umzulegen.
The landlord is trying to pass the renovation costs on to the tenants.

to flip
To move a switch or lever into another position in order to turn something on or off.
Er legte den Hebel um und die Maschine startete.
He flipped the lever and the machine started.

to knock down
To cause something standing upright to fall; to fell.
Der Sturm hat in der ganzen Straße mehrere Bäume umgelegt.
The storm knocked down several trees along the whole street.

to bump off
Colloquial for to kill or murder someone.
Im Krimi droht der Gangster damit, den Zeugen umzulegen.
In the crime novel, the gangster threatens to bump off the witness.

to move
To put something in another place or move it into another position.
Wir müssen das Stromkabel umlegen, damit niemand darüber stolpert.
We need to move the power cable so that no one trips over it.

to put around oneself
To put a piece of clothing or accessory, usually a scarf, shawl, or coat, around the body, neck, or shoulders.
Als es kühler wurde, legte sie sich eine Decke um die Schultern.
When it got cooler, she put a blanket around her shoulders.
'Umlegen' (to pass on / flip / move) is a separable verb. The prefix 'um' comes at the end in a main clause. In subordinate clauses and in the infinitive with 'zu,' the verb stays together.
Er legt den Schalter um.
He flips the switch.
The verb consists of the prefix 'um-' and the verb 'legen' (to lay/put). The prefix 'um' often indicates a change of position, a change of state, or a distribution, which connects the different meanings of the word.
Kannst du bitte den Teppich etwas umlegen, damit er gerade liegt?
Can you please move the rug a little so that it lies straight?
When costs are distributed, the preposition 'auf' is used with the accusative. The structure is: 'Kosten auf jemanden umlegen' (to pass costs on to someone).
Die Firma legte die gestiegenen Transportkosten auf die Kunden um.
The company passed the increased transport costs on to the customers.
In this meaning, 'umlegen' (to flip) is used almost exclusively with the nouns 'Schalter' (switch) or 'Hebel' (lever). It describes the mechanical movement used to operate a device.
Um die Maschine zu stoppen, müssen Sie nur diesen Hebel umlegen.
To stop the machine, you only need to flip this lever.
The meaning 'jemanden töten' (to kill someone) is very informal colloquial language. You often find it in crime novels or films, but it should be avoided in formal or everyday conversations.
Der Detektiv vermutete, dass die Mafia den Zeugen umgelegt hatte.
The detective suspected that the mafia had bumped off the witness.
When putting on a piece of clothing, the verb is used reflexively with a dative pronoun: 'sich (dative) etwas (accusative) umlegen' (to put something around oneself).
Mir ist kalt, ich lege mir schnell einen Schal um.
I'm cold; I'll quickly put a scarf around myself.
to kill
Both verbs can mean that someone is killed. “Töten” is the neutral, direct term. “Umlegen” is colloquial in this sense, often crude or euphemistic, and is more suitable for casual speech or a threat than for a factual report.

Der Gangster drohte, er werde den Wachmann umlegen.
The gangster threatened that he would take out the security guard.
Im Bericht steht, dass der Täter den Wachmann tötete.
The report states that the perpetrator killed the security guard.