"sorrowful," early 15c., from French triste (10c.), from Latin tristis "sad, sorrowful, gloomy. " Formerly nativized, since late 18c. treated as a French word in English and often spelled triste.
Online Etymology Dictionary, © 2010 Douglas Harper
Examples from the Web for trist
Trist, do you know that Thorold has nearly paid off father's debts?Mollie's Prince
Rosa Nouchette Carey
Bereft of its stormy impetuosity it is as trist as her thoughts.The Complete Opera Book
Hence the fears of Trist and Scott do not seem unreasonable.
Trist they liked and trusted, yet could not deceive or frighten.
Pillow (Address) attributed to his letter the recall of Trist.