Synonyms for useless

Adjective

1. useless (vs. useful), cast-off(prenominal), discarded, junked, scrap(prenominal), waste, futile, ineffectual, otiose, unavailing, inutile, unprofitable, unserviceable, unusable, unuseable, ineffective#1, uneffective#1, ineffectual, unprofitable, unserviceable

usage: having no beneficial use or incapable of functioning usefully; "a kitchen full of useless gadgets"; "she is useless in an emergency"

2. useless, unhelpful (vs. helpful)

usage: not useful; "a curiously unhelpful and useless manual"