müssen

From Middle High German müeȥen, from Old High German muoȥan, from Proto-West Germanic *mōtan.

The closeness to the original diphthong can for example still be seen in the Bavarian first and third person singular, where one says I muas (I must) or Ea/Si/Es muas (He/she/it must).

• IPA^(key): /ˈmʏsən/, [ˈmʏsən], [ˈmʏsn̩] (Germany)

  • Audio:

    (file)

    (Germany)

• IPA^(key): /ˈmʏsɛn/, [ˈmʏsn̩] (Austria, Southern Germany, Switzerland)

  • Audio:

    (file)

    (Austria)

• Hyphenation: müs‧sen

müssen (preterite-present, third-person singular present muss, past tense musste, past participle gemusst, past subjunctive müsste, auxiliary haben)

1. (auxiliary, with an infinitive → “” replaces the past participle) to have to (do something); must; to be obliged (to do something); to need (to do something).

   Wir müssen es machen. ― We must do it.

   Wir haben es nicht machen müssen. ― We didn't need to do it.

   Ich musste es machen. ― I had to do it.

2. (intransitive, with past participle “gemusst”) to have to do something implied; must; to be obliged.

   Ja, ich muss. ― Yes, I must.

   Ja, ich habe gemusst. ― Yes, I had to.

3. (colloquial, euphemistic) to need to go to the bathroom.

   Ich muss mal. ― I have to go (to the bathroom).

• Müssen can express the necessity of doing something, but also the moral duty. Sollen expresses moral duty or the suggestion that something ought to be done. Both verbs can express a duty imposed by someone else. In this case müssen is stronger than sollen, implying that the imposing person has some kind of power to make the other really do it.
• As shown in the first line, the infinitive is used instead of the past participle in the compound tenses if the verb has a complement verb. The phenomenon is called double infinitive.

Das hätten wir machen müssen.

We should have done that.

• In southern German and Austrian speech, the infinitive is often used instead of the past participle in any construction. Thus: ich habe nicht müssen for standard ich habe nicht gemusst.
• As shown in the example above, nicht müssen translates into English as “need not” rather than “must not”. For the English “must not”, use nicht dürfen.
• Before 1996, several of the conjugated forms of müssen were spelled with an ß (that is, muß, mußte, müßte, etc.). Since the spelling reform of 1996, however, the acceptable spelling is with ss.

• durchmüssen
• wegmüssen
• weitermüssen
• zurückmüssen

• “müssen” in Digitales Wörterbuch der deutschen Sprache
• “müssen” in Uni Leipzig: Wortschatz-Lexikon
• “müssen” in Duden online
• “müssen” in OpenThesaurus.de