How do you say I know in Yiddish?

There are a few ways to say "I know" in Yiddish, depending on the context and nuance you want to convey:

Formal:

* איך ווייס (ik veys) - This is the most literal and neutral way to say "I know".

* איך בין זיך באַקאַנט מיט (ik bin zikh bekannt mit) - This means "I am familiar with" and can be used when you have knowledge about something specific.

Informal:

* איך ווייס שוין (ik veys shon) - This means "I already know" and is used when you're emphasizing that you already have this knowledge.

* איך האב געוויסט (ik hob gewisst) - This means "I knew" and is used to indicate that you knew something in the past.

* איך האָב אַ געדאַנק (ik hob a gedank) - This literally translates to "I have a thought" and is a more colloquial way of saying "I know" or "I have an idea".

* איך בין דאָך נישט קיין טיפּ (ik bin doch nisht kein tip) - This is a playful way of saying "I know" and translates to "I am not a fool".

The best way to choose the right phrase depends on the specific situation and your intended meaning.