TRISTFUL Meaning of TRISTFUL in English — tristfully , adv. — tristfulness , n./trist"feuhl/ , adj.full of sadness; sorrowful. [ 1485-95; obs. trist sad, gloomy ( triste tristis ) + -FUL ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012