stolid

Etymology

From Middle French stolide, from Latin stolidus (“foolish, obtuse, slow”).

adj

1. Having or revealing little emotion or sensibility; dully or heavily stupid.
   With his symbolic helmet numbered 451 on his stolid head, and his eyes all orange flame with the thought of what came next, he flicked the igniter and the house jumped up in a gorging fire that burned the evening sky red and yellow and black. 1950, Ray Bradbury, Fahrenheit 451
   Al Gore, Jr., the Democratic candidate, was Clinton's stolid heir; […] 2022, Gary Gerstle, chapter 6, in The Rise and Fall of the Neoliberal Order[…], New York: Oxford University Press, Part II. The Neoliberal Order, 1970–2020