Мы понимаем друг друга лучше, когда говорим спокойно.

to speak

Breakdown of Мы понимаем друг друга лучше, когда говорим спокойно.

• мы: we
• понимать: to understand
• когда: when

Questions & Answers about Мы понимаем друг друга лучше, когда говорим спокойно.

What does друг друга mean here?

Друг друга means each other or one another.

So:

• Мы понимаем друг друга = We understand each other

Even though друг by itself can mean friend, in this expression друг друга is a fixed reciprocal phrase. You should learn it as a unit.

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Why is it понимаем друг друга, not just понимаем?

Because понимать usually takes an object: you understand someone or something.

Here, the object is друг друга = each other.

• Мы понимаем = We understand
  This is grammatically possible, but incomplete unless the context already makes clear what or whom we understand.
• Мы понимаем друг друга = We understand each other

So друг друга completes the idea.

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Why is it друг друга specifically? What case is that?