Formal:
* Nababagot ako. (This is the most literal and formal translation.)
* Wala akong magawa. (This means "I have nothing to do.")
Informal:
* Naiinip ako. (This means "I'm impatient" and is often used to express boredom.)
* Bored na bored ako. (This is a more emphatic way of saying "I'm bored.")
Slang:
* Nakakabagot. (This means "It's boring.")
* Nakakapikon. (This means "It's annoying" and can also be used to express boredom.)
The best way to choose the right phrase is to consider who you are talking to and the situation. For example, you would use a more formal phrase when speaking to an elder or someone you don't know well. You could use a more informal or slang phrase when talking to friends or family.