not marked by the use of reason
"mindless violence"
"reasonless hostility"
"a senseless act"
unresponsive to stimulation
"he lay insensible where he had fallen"
"drugged and 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"
(of especially persons) lacking sense or understanding or judgment
Without feeling or consciousness; deprived of sensation.