Impossible to do or carry out:
Not workable or useful; impracticable
not capable of being used
Without worth or merit; useless, valueless, etc.
The definition of ineffectual is not productive or not working correctly.
That has or have previously been owned by someone else.
Find another word for unusable. In this page you can discover 19 synonyms, antonyms, idiomatic expressions, and related words for unusable, like: useless, impracticable, impractical, unuseable, inaccessible, inoperative, unserviceable, unworkable, inutile, worthless and redundant.