Adjective
senseless -
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 ,
superfluous ,
wasted
worthless lacking in usefulness or value; "a worthless idler"
senseless -
not marked by the use of reason; "mindless violence" ; "reasonless hostility" ; "a senseless act"
mindless ,
reasonless
unreasonable not reasonable; not showing good judgment
senseless -
unresponsive to stimulation; "he lay insensible where he had fallen" ; "drugged and senseless"
insensible
unconscious (followed by `of') not knowing or perceiving; "happily unconscious of the new calamity at home" - Charles Dickens
senseless -
(of especially persons) lacking sense or understanding or judgment
nitwitted ,
soft-witted ,
witless
