Synonyms of useless

Adjective

1. useless (vs. useful), futile, ineffectual, otiose, unavailing, inutile, 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"

Definition and meaning of useless (Dictionary)