shallow-witted

So rang the cry of the shallow-witted people of an age splendid even in its contradictions.

The Mississippi Bubble Emerson Hough 1890

It is for this that I sit here now, telling you all manner of odd quips and jests until yon sober, wise man shakes his head and goes his way, thinking that I am even more of a shallow-witted knave than I really am.

Pepper & Salt or, Seasoning for Young Folk Howard Pyle 1882

(nevertheles) she avouched with very vehement asseverations: fell instantly sicke of womens naturall disease, thinking every minute a tedious month, till she were in company with some other Gossips, to breake the obligation of her vertuous promise, and that others (as well as her selfe) might laugh at the folly of this shallow-witted woman.

The Decameron 2004