Definition
: having or expressing little or no sensibility : unemotional
Examples
The stolid detective spoke to the witness in a precise, unequivocal manner.
"A modest woman of great heart and spirit, Deirdre, perhaps more than any other member of the family, has weathered the storms she and her husband have endured with a stolid equanimity…." — Charles Isherwood, The New York Times, 19 Feb. 2016