What is an antonym of the word out?

The antonym of "out" depends on the context. Here are some possibilities:

In the sense of "outside":

* In

* Inside

In the sense of "not present":

* In

* Present

* Available

In the sense of "no longer working":

* On

* Working

* Operational

In the sense of "finished":

* Unfinished

* Incomplete

In the sense of "revealed":

* Hidden

* Secret

* Concealed

In the sense of "loud":

* Quiet

* Soft

* Low

To give you the most accurate antonym, please provide the sentence or context where "out" is used.