After Rose went home he seemed to Sanborn to be more Impassible than ever.
"Rose of Dutcher's Coolly"
Hamlin Garland
Mais un homme comme, monsieur-maussade, boudeur, Impassible!
"The Woman in Black"
Edmund Clerihew Bentley
But he was obliged to sit down again; his legs refused to bear his weight; he turned pale; and that nature, ordinarily so Impassible, seemed about to give way under the shock of this happiness.
"The Lesser Bourgeoisie"
Honore de Balzac