Formal:
* Oya: This is the most common and formal way to say "no." It's used in most situations, even when addressing someone older or in a position of authority.
Informal:
* Si: This is a more casual way to say "no," similar to the English "nope" or "nah." It's used among friends and family, and is generally less formal than "oya."
* Eee: This is a very informal and colloquial way to say "no." It's used in casual conversations and might be considered rude in formal settings.
Other options:
* Nti: This is a more emphatic "no," and is often used to express strong disagreement.
* Sinzo: This means "I don't want to," and can be used when declining a request.
Example:
* "Urashaka ikawa?" (Do you want coffee?)
* "Oya." (No.)
It's important to note that the intonation and context can change the meaning of these words. For example, "oya" can be used as a simple "no," or it can be used to express a strong refusal.
It's always helpful to consider your audience and the situation when choosing how to say "no" in Kirundi.