Here are some possibilities:
1. "Anni" as a nickname: This is the most likely scenario. "Anni" could be a nickname for someone named "Anna" or "Anny," which are common names in Kerala.
2. "Anni" as a shortened form: It could be a shortened form of a longer word, such as "Anniyan" (which means "brother" in Tamil, a language closely related to Malayalam).
3. "Anni" as a misspelling: It could be a misspelling of a word like "Anniversary."
4. "Anni" as a proper noun: It could be a place name or the name of a person or object.
To help me understand what you mean, please provide more context:
* What was the sentence or situation where you heard or saw "Anni"?
* What is the topic of the conversation or text?
* Can you provide any other details about the word or its usage?
With more information, I can provide a more accurate answer.