Formal:
* باشه (bashe): This is the most common and formal way to say "okay."
* خوب (khoob): This literally means "good," but it can be used as an affirmative response similar to "okay."
Informal:
* باشه (bashe): This is also used informally, but with a slightly less formal tone.
* خب (khab): This is a shorter and more informal version of "khoob."
* خیلی خب (kheyli khoob): This literally means "very good" and can be used as a more enthusiastic "okay."
* حله (halle): This is a more casual and slang term for "okay."
Other options:
* چشم (cheshm): This literally means "eye" and is used as an affirmative response, similar to "yes."
* بله (bale): This is the most common word for "yes" and can also be used as an affirmative response similar to "okay."
The best way to choose the right phrase is to consider the situation and the person you are talking to.