stolid

ilmeetön, eloton Having or revealing little emotion or sensibility.
1857, w:Emily Dickinson|Dickinson, Emily, "s:Safe in their alabaster chambers (Dickinson, 1859)|Safe in their alabaster chambers", verse 2.

Light laughs the breeze

In her Castle above them —

Babbles the Bee in a stolid Ear,

Pipe the Sweet Birds in ignorant cadence —

Ah, what sagacity perished here!

They (Eloi) all failed to understand my gestures; some were simply stolid, some thought it was a jest and laughed at me.

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.