lassen

From Middle Dutch lasschen (“to join together”). Further etymology is unclear, but probably borrowed from Old French lacer (“to tie”).

• IPA^(key): /ˈlɑ.sə(n)/

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lassen

1. to weld

From Middle High German lāzzen (in the 15th century also lassen), from Old High German lāzan, from Proto-Germanic *lētaną.

• IPA^(key): [ˈlasn̩], [ˈlasən]

• audio (Germany)

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• audio (Austria)

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lassen (class 7 strong, third-person singular simple present lässt, past tense ließ, past participle gelassen, past subjunctive ließe, auxiliary haben)

1. (transitive, with an infinitive) to allow; to permit; to let
2. (transitive, with an infinitive) to have someone (do something); to have (something done); to make (something happen); to cause (something to be done)

   etwas machen lassen — “to have something done”

   jemanden etwas tun lassen — “to have someone do something”

3. (transitive) to let; to leave
4. (transitive) to stop (something); to quit; to refrain from; to help doing (something)
5. (intransitive) to cease; to desist

• Note that the English phrases "to let someone do something" and "to make someone do something" both translate into German as jemanden etwas tun lassen. In order to avoid ambiguity, "to let" can be expressed as jemandem erlauben, etwas zu tun, and "to make" can be expressed as jemanden dazu bringen, etwas zu tun.
• In perfect tenses, lassen + infinitive takes a double-infinitive construction, i.e. both verbs are in the infinitive: Ich habe mir die Haare schneiden lassen. (“I’ve had my hair cut.”)

• lasch
• lässig

• lassen in Duden online

lassen

1. inflected form of lass