senseless

Senseless things have no meaning — you can't easily explain why they happen. Senseless people, on the other hand, are simply unconscious.

This adjective often describes something terrible or violent, like a senseless accident or the senseless destruction of a city. It can also mean "done without thinking," or "lacking understanding," so a senseless student will give the teacher a blank look when their name is called, and a hiking trip across the Rockies in the winter would be senseless too. The "unconscious" meaning is the oldest, dating from the 1550s.

Definitions of senseless
1

adj not marked by the use of reason

“a senseless act”
Synonyms:
mindless, reasonless
unreasonable
not reasonable; not showing good judgment

adj serving no useful purpose; having no excuse for being

senseless violence”
Synonyms:
otiose, pointless, purposeless, superfluous, wasted
worthless
lacking in usefulness or value

adj (of especially persons) lacking sense or understanding or judgment

Synonyms:
nitwitted, soft-witted, witless
stupid
lacking or marked by lack of intellectual acuity

adj unresponsive to stimulation

“drugged and senseless
Synonyms:
insensible
unconscious
not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead

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