Definition & Meaning of "onya"in English

What does "onya" mean in Australian slang?

In Australian slang, "onya" is an expression of approval, praise, or congratulations, meaning "good on you." It is used in informal Australian English to acknowledge someone's success, effort, or positive action in a casual and friendly way. The term became common through everyday spoken Australian English as a fast, contracted form of "good on ya," with "ya" being a colloquial form of "you." It is typically used in conversational contexts to show encouragement or appreciation.