witless

Lacking intelligence or wit; foolish.

Destitute of wit or understanding; thoughtless; unreflecting; stupid.

Not knowing; unconscious.

Proceeding from thoughtlessness or folly; not under the guidance of judgment; foolish; indiscreet; senseless; silly.

Destitute of wit or understanding; wanting thought; hence, indiscreet; not under the guidance of judgment.

Destitute of wit or understanding; wanting thought; hence, indiscreet; not under the guidance of judgment.

(of especially persons) lacking sense or understanding or judgment