What is the Antonym of feasible?

The antonym of feasible depends on the context, but some common options include:

General antonyms:

* Impractical

* Unrealistic

* Impossible

* Infeasible (this is essentially the direct opposite)

* Unworkable

* Unattainable

* Unviable

More specific antonyms depending on context:

* Implausible (if referring to a plan or idea)

* Utopian (if referring to a goal or vision)

* Irrational (if referring to a decision or action)

* Unreasonable (if referring to a request or demand)

The best antonym will depend on the specific situation and the meaning you want to convey.