thick-headedness

I don’t think it’s merely boredom and thick-headedness that leads her to text you.

The supermarket/parking lot behaviors you describe could be matters of flagrant inconsideration, male thick-headedness, or a profound lack of awareness.

Despite all his denial and even my own thick-headedness while writing the book, his voice always seemed to me to be motivated by love.

But Clemenceau, in whose imperialist rapacity there have remained in their full force all the characteristics of lower-middle-class thick-headedness, refused the Junkers their bone, and at the same time decided at all costs to decorate the Invalides with the scalps of the leaders of the Soviet Republic.

Second day, ditto; third day, one dose in morning; after bank hours went to friend's sanctum and engaged in a game of chess, and while so engaged felt a growing sense of nausea and thick-headedness—so much so, that I was obliged to excuse myself and hurry to my own quarters.