senseless

adjective

1. 1

   (of especially persons) lacking sense or understanding or judgment

2. 2

   unresponsive to stimulation

   he lay insensible where he had fallen

   drugged and senseless

3. 3

   not marked by the use of reason

   mindless violence

   reasonless hostility

4. 4

   serving no useful purpose; having no excuse for being

   otiose lines in a play

   advice is wasted words