P / per-tristis
adjective

per-tristis

neut. per-triste
very sad; mournful
very sad or mournful.
Lit.: carmen, Cic. poët. Div. 1, 8, 14.—
very austere; morose by extension
Transf., very austere or morose: patruus, Cic. Cael. 11, 25.