brainless

Don't fancy that a man who has made millions—made it, understand—is brainless, and not well worth knowing.

He is utterly insignificant, rebuked, and humiliated,--even as a brainless beauty finds herself de trop in a circle of wits.

Especially he had despised the young men as brainless cowards in regard to their views of women and conduct toward them.

I mean that the intellectual, the clever, invariably choose the insipid brainless girl.

I am fit only to be the wife of an idle brainless man, with money and a title,' she said, in extreme self-contempt.