Adjective
1. lacking the thinking capacity characteristic of a conscious being;
"the shrieking of the mindless wind"2. requiring little mental effort;
"mindless tasks"3. not mindful or attentive;
"while thus unmindful of his steps he stumbled"- G.B.Shaw4. complacently or inanely foolish
5. not marked by the use of reason;
"mindless violence""reasonless hostility""a senseless act"