Open English Wordnet
Adjectives
(s)otiose, pointless, purposeless, senseless, superfluous, wastedserving no useful purpose; having no excuse for being“otiose lines in a play”, “advice is wasted words”, “a pointless remark”, “a life essentially purposeless”, “senseless violence”
(s)futile, ineffectual, otiose, unavailing, meaninglessproducing no result or effect“a futile effort”, “the therapy was ineffectual”, “an otiose undertaking”, “an unavailing attempt”