Formal:
* Tunay na (literally "truly") - This is a very formal and direct way to say "indeed."
* Sa katunayan (literally "in reality") - This phrase emphasizes that something is true.
* Totoo nga (literally "it's true indeed") - This emphasizes the certainty of the statement.
Informal:
* Oo naman (literally "yes of course") - This is a casual way to say "indeed" and is used to express agreement.
* Talaga (literally "really") - This is a more informal and emphatic way to say "indeed."
* Sige (literally "okay") - This can be used to say "indeed" in a casual, almost dismissive way, like "okay, you're right."
The best translation will depend on the specific context and the tone you want to achieve.