Translation of "Kund" in English

Ich tat ihm mein Interesse kund.
I told him I was interested.
Tatoeba v2021-03-10

Ich tat ihr mein Interesse kund.
I told her I was interested.
Tatoeba v2021-03-10

So also tut man es kund?
Is that how one says it?
OpenSubtitles v2018

Sie tun ihn uns kund, und wir akzeptieren ihn oder nicht.
They make their will known to us and it's up to us to either accept or reject it.
OpenSubtitles v2018

Nur Narrenmund tut derlei Schwachsinn kund.
Only fools mouth make known this kind nonsense.
OpenSubtitles v2018