Formal:
* Sige: This is the most common and general way to say "okay" in Tagalog. It can be used in most situations.
* Opo: This is a formal way of saying "yes" which can also be used to mean "okay" in some situations.
* Ganun po ba? (Is that so?) This is a polite way to acknowledge what someone has said and agree to it.
Informal:
* Sige: As mentioned above, this is also used informally.
* Okay: This is the English word and is commonly used in Tagalog.
* Ayos: This means "good" or "alright" and can be used as a synonym for "okay."
* Gusto ko: (I want) This is a way to agree to something enthusiastically.
* Pwede na: (It's okay) This implies that something is acceptable, but not necessarily ideal.
* Walang problema: (No problem) This can be used to mean "okay" when someone asks if it's alright to do something.
Other ways:
* Bahala na: (Let it be) This expresses a sense of resignation and means "okay" in the sense of "I'll go with the flow."
The best way to say "okay" in Tagalog depends on the context of the situation and the relationship between the speakers.