"mindless" in the adjective sense
1. mindless
lacking the thinking capacity characteristic of a conscious being
"the shrieking of the mindless wind"
2. mindless
requiring little mental effort
"mindless tasks"
3. unmindful, forgetful, mindless
not mindful or attentive
"while thus unmindful of his steps he stumbled"- G.B.Shaw
4. mindless, vacuous
devoid of intelligence or thought
"a vacuous mind"
"a vacant expression"
5. mindless, reasonless, senseless
not marked by the use of reason
"mindless violence"
"reasonless hostility"
"a senseless act"
Source: WordNet® (An amazing lexical database of English)
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