Wiktionary
dull-minded
a. dim-witted, stupid, unintelligent
Usage examples of "dull-minded".
What did his kind know about the labor barracks where the dull-minded, the failures, the petty criminals on the run, lived hard under a secret social system of their own?
As it was, he felt only dull-minded, exhausted gratitude when he finally climbed down out of the saddle.
She felt listless and dull-minded as she lay there, letting him suck from her, letting his silky hair tickle her belly, her thighs.