Hopeless, sisyphean, bad, and bum are all synonyms for useless. Useful and beneficial are antonyms of useless. And here are 42 another word for useless.
Sisyphean, bootless, broken, fruitless, futile, hopeless, impotent, impractical, in vain, ineffectual, inefficacious, junky, kaput, nugatory, pointless, profitless, purposeless, to no avail, to no purpose, unachievable, unavailing, unproductive, unprofitable, unserviceable, unusable, unworkable, vain, and inutile are all synonyms for useless.
Bad, bum, hopeless, inadequate, incapable, incompetent, ineffective, ineffectual, inept, no good, weak, worthless, and a dead loss are all another word for useless.
Useless synonym page has a variety of synonyms that differ in length. 2 synonyms with 3, 4, and 13 letters and 3 synonyms with 5, and 12 letters. 4 synonyms with 6, and 10 letters and 6 synonyms with 8, and 9 letters.
7 synonyms with 11 letters. For a total of 39 another word for useless.
This old gadget is useless.
His advice was completely useless.
That broken pen seems useless now.
The outdated map is useless.