Unworkable

What must be done if the plan proves unworkable?

She thought the plan was good, but unworkable.

I think that a thorough spelling reform of English is unworkable. Maybe, a total language replacement is necessary.

Near-synonyms: infeasible, untenable, unusable

These plans seem unworkable; moreover, a budget for their implementation remains a fantasy.

A Welsh Government spokesman said: "We are opposed to the approach being taken by the UK Government, which we feel is unnecessary, probably unworkable, and will do nothing to resolve industrial disputes.

Near-synonyms: unprocessable, unusable

unworkable soils;   unworkable clays;   unworkable metals

The building of the consensus group, however, forced these interests to distinguish annoying features of the law from unworkable ones, and the list of the unworkables steadily dwindled.

We all have some secret little hope that the unworkables will be resurrected. You haven't seen any of the occupants of the pyramids pull this off yet, nor will you see any use for old, outdated, dead office stuff.