otiose in WordNet English dictionary

1. disinclined to work or exertion
   "faineant kings under whose rule the country languished"; "an indolent hanger-on"; "too lazy to wash the dishes"; "shiftless idle youth"; "slothful employees"; "the unemployed are not necessarily work-shy"
   faineant  indolent  lazy  otiose  slothful  work-shy 
   
2. producing no result or effect
   "a futile effort"; "the therapy was ineffectual"; "an otiose undertaking"; "an unavailing attempt"
   futile  ineffectual  otiose  unavailing 
   
3. serving 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"
   otiose  pointless  purposeless  senseless  superfluous  wasted