What is another word for inquistive?

Here are some synonyms for "inquisitive," depending on the nuance you want to convey:

Formal:

* Curious

* Inquiring

* Investigative

* Prying (can have a slightly negative connotation)

* Interrogative

Informal:

* Nosy (can be negative)

* Curious

* Interested

* Eager to learn

* Questioning

More specific:

* Analytical

* Investigatory

* Scrutinizing

* Probing

The best synonym will depend on the specific context and the tone you want to set.