wenn

Like wann, from Proto-Germanic *hwannē (“at what time, when”), from Proto-Indo-European *kʷo-, *kʷi- (“interrogative base”).

• IPA^(key): /vɛn/

• Audio (Austria)

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wenn (subordinating)

1. when

   Sag bitte Bescheid, wenn du fertig bist!

   Tell me when you're done!

2. if (on the condition that)

   Was tun, wenn ich nicht weiß, ob sie mich liebt?

   What (to do) if I don't know if she loves me?

If a conditional sentence is composed by a passive voice, wenn is omitted.

Wird das nicht gemacht, müsste die Nutzung beschränkt werden.

(If) that is not done, then the uses must be limited.

• wann

• wenn in Duden online

From Proto-Germanic *hwannē (“at what time, when”), from Proto-Indo-European *kʷo-, *kʷi- (“interrogative base”).

• IPA^(key): /vɛn/

wenn (subordinating)

1. when
2. if (on the condition that)

• wannehr
• wann

• wænn, ƿenn

From Proto-Germanic *wanjaz, diminutive of Proto-Germanic *wan- (“swelling, growth, lump, tumor”), of uncertain origin. Cognate with Middle Low German wene (“wen”), Middle Dutch wanne, wan (“goiter”).

wenn m (nominative plural wennas)

1. wen (cyst on the skin)

• Middle English: wenne
  • English: wen