Senseless
/ˈsɛnsləs/
adjective
Without feeling or consciousness; deprived of sensation
“The blow to his head rendered him senseless, he didn't awaken until he was in the ambulance.”
Lacking meaning or purpose; without common sense
“What a senseless waste of money.”
Without consideration, awareness or sound judgement
“He took senseless risks, not even aware of the danger he was in.”
Synonyms: insensible, unconscious, meaningless, pointless, stupid, unreasonable, unwise