çüş! dur!

listen to the pronunciation of çüş! dur!
Türkisch - Englisch
whoa
stop (especially when commanding a horse or imitative thereof); calm down; slow down

Whoa, Nelly!.

An expression of surprise

Whoa, are you serious?.

Whoa is a command that you give to a horse to slow down or stop
You can say whoa to someone who is talking to you, to indicate that you think they are talking too fast or assuming things that may not be true. Slow down! Whoa!. Used as a command to stop, as to a horse
Stop; stand; hold
{ü} stop! (command for a horse)
See Ho, 2