say it: YOO-sluhs
useless is an adjective meaning "having no beneficial use or incapable of functioning usefully". It carries one recorded sense.
having no beneficial use or incapable of functioning usefully
“a kitchen full of useless gadgets”
“she is useless in an emergency”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for useless come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.