a.
1.
Inert, not sentient, without perception.
2.
Insensible, unfeeling, apathetic.
3.
Unreasonable, foolish, nonsensical, ill-judged, unwise, absurd, unmeaning, silly.
4.
Stupid, foolish, doltish, silly, simple, witless, weak-minded.
5.
Unconscious, insensible, unknowing.