This is the 5399th most frequent Turkish word.
koşuluyla
"Koşuluyla" means "on the condition that" or "provided that" in English.
The word 'koşuluyla' here indicates a condition or limitation needed to fulfill the initial clause of the sentence.
Toplantıya katılabilirsin, ancak sessiz olmak koşuluyla.
You can attend the meeting, provided that you remain quiet.
'Koşuluyla' is used to establish a prerequisite for the activity described in the first part of the sentence.
Film izleyebiliriz, hava erken kararması koşuluyla.
We can watch a movie, on the condition that it gets dark early.
This usage of 'koşuluyla' sets a stipulation tied to an external factor affecting the subsequent action.