Definition of "useless"

useless

/ˈjuːs.ləs/

adjective
comparative more useless or uselesser, superlative most useless or uselessest
1. Without use or possibility to be used.
  Quotations
  I'm all for opening new stations (Transport Scotland is planning another at East Linton, about halfway between Drem and Dunbar), but they are useless without a decent service.
  2021 June 30, Philip Haigh, “Regional trains squeezed as ECML congestion heads north”, in RAIL, number 934, page 53
2. Unhelpful, not useful; pointless (of an action).
3. (derogatory, of a person) Good-for-nothing; not dependable.
4. (colloquial, of a person) Unable to do well at a particular task or thing. Useless is mildly insulting.