Yes = Oo
In the past, the word for "yes" was "huo," and over time it has been simplified to "oo." It sounds like "oh oh," but in common usage it sometimes blends into one long "oh."
No = Indî
"Indî" is the standard word for "no," but it's only used in certain situations. It is used for questions of state, like "Are you asleep?" It is also used for questions about future events, like "Are you coming over later?"
"Are you here for work?" (state) — "Indî."
"Is she Canadian?" (state) — "Indî."
"Will they come back later?" (future) — "Indî."
No = Walâ
The other word for "no" is "walâ." This is used when you are talking about possession ("Do you have..."), existence ("Are there any..."), or past ("Did you...") and present tense actions ("Are you...", "Do you ever...").
"Do you have any peanuts?" (possession) — "Walâ."
"Is there any cheese here?" (existence) — "Walâ."
"Have you ever been to Cebu?" (past action) — "Walâ."
"Did you eat all the mango float?" (past action) — "Walâ."
"Are you laughing at me?" (present action) — "Walâ."
"Do you eat squid?" (present action) — "Walâ."
Not
Indî and Walâ can be used to flip a sentence to a negative.
Normal: "I will run." — "Magdalagan ko." (run = dalagan)
Negative: "I will not run." — "Indî ko magdalagan." (future)
"I did not laugh." — "Walâ ko nagkadlaw." (laugh = kadlaw)
"I am not worrying." — "Walâ ko nagakabalakâ." (worry = nagakabalakâ)
"We don't drink that." — "Walâ kami nagainom sinâ" (drink = inom, that = sinâ)
Future Object / Recipient - When using these focuses for negative sentences, "pag" is added to the front of the verb.
"I will not take the drink." — "Indi ko pagkuhaon ang ilimnon." (take = kuhâ, drink = ilimnon)
"You will not be given a pig." — "Indi ka paghatagan sang baboy." (give = hatag, pig = baboy)
Not Knowing a Skill: To say, "I don't know how to..." you say, "Indî ko kabalo mag..." Example: "Indi ko kabalo magtagalog." ("I don't know how to speak Tagalog.")