What is a noun form for feasible?

There isn't a single, direct noun form for "feasible" in English. However, you can express the concept of feasibility in a few ways:

* Feasibility: This is the most common way to use the noun form, although it's more of a technical term.

* Possibility: This is a broader term that encompasses the potential for something to happen.

* Viability: This word emphasizes the practical or realistic aspects of something.

* Practicability: This term highlights the ease with which something can be carried out.

The best choice depends on the specific context and the nuance you want to convey.