Synonyms for Useless:

adj.

dissatisfactory (adjective)
unsuitable.
failing (adjective)
unsuccessful.
feckless (adjective)
good-for-nothing.
hopeless (adjective)
hopeless.
impossible (adjective)
unworkable.
not working; not valuable (adjective)
good-for-nothing, impractical, scrap, ineffectual, unavailing, futile, waste, unworkable, fruitless, incompetent, unprofitable, hopeless, vain, impracticable, nonfunctional, inutile, ineffective, pointless, abortive, inoperative, purposeless.
rejected (adjective)
discarded.
unprofitable (adjective)
barren.
unsuccessful (adjective)
foiled, frustrated, futile, thwarted, fruitless, pointless, failed, unsuccessful, vain, abortive, ineffectual.
useless (adjective)
impractical, good-for-nothing, inadequate, unserviceable, nonfunctional, detrimental, unusable, unsuitable, fruitless, ineffective, unworkable, futile.

n.

purposeless, pathetic, defective, faulty. used. unnegotiable, impracticable. thrive, barren. inefficacious, inefficient, affect. futile (noun)
hopeless.
useless (noun)
discarded, unavailing, junked, unhelpful, otiose, unprofitable, scrap, inutile, waste, futile, cast off, unusable, ineffectual, unuseable, unserviceable.

Other synonyms:

unnegotiable, purposeless, defective, inefficacious. impracticable. inefficient. barren. discouraging
hopeless.
Other relevant words:
efficient, broken, unavailing, unuseable, purposeless, otiose, inutile, inoperative, hopeless, inefficient, incompetent, unprofitable, unnegotiable, used, inefficacious, waste, thrive, pathetic, junked, scrap, affect, discarded, impracticable, unhelpful, barren, faulty, defective.

Usage examples for useless

  1. But her desire for real life can last very long- her silly, useless desire. – The Woman With The Fan by Robert Hichens
  2. I have led a useless life, and a more or less selfish one. – Thelma by Marie Corelli
  3. Our efforts are useless there. – Cord and Creese by James de Mille