It's a versatile word that can also mean "happy," "glad," or "pleased." You can use it in a variety of contexts to express excitement or joy.
For example:
* "Yá'át'éeh, níníshní!" (I'm excited!)
* "Yá'át'éeh, baa níníshní" (I'm happy for you).
Keep in mind that Navajo is a complex language with intricate grammar and pronunciation. While "yá'át'éeh" is a good starting point, it's best to consult with a fluent speaker or a language resource for a more nuanced understanding.