the quality of being doable
"The feasibility of launching the new project depends entirely on securing enough funding within the quarter."
The state of being feasible or possible.
"The feasibility of launching the new project was confirmed after the initial budget review."
In plain English: Feasibility is whether something can actually be done successfully with the resources you have available.
"The feasibility study showed that building the new road within the budget is possible."
Usage: Use feasibility to describe whether a plan can be successfully carried out given available resources and time constraints. It is often the key factor in deciding if an idea should move forward from theory into action.
Feasibility entered English in the late 14th century via Anglo-Norman as fesable, meaning "capable of being done." The word was later adapted with the suffix -ity to form our modern noun describing what is possible or practical.