Impossible to do or carry out:
The definition of impractical is not useful, or is not efficient.
Capable of happening, existing, or being true without contradicting proven facts, laws, or circumstances:
That has or have previously been owned by someone else.
Not feasible; not easily done; impracticable
Find another word for unworkable. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for unworkable, like: impracticable, impossible, impractical, unattainable, unrealizable, unthinkable, unnegotiable, unserviceable, unusable, useless and out-of-the-question.