tristĭfĭcus, a, um, adj. [tristis-facio],
making sad , saddening : voces, Cic. poët. Div. 1, 7, 13 tyrannus, Prud. Cath. 4, 76: acetum acore, Macr. S. 7, 12, § 30.
trīstificus adj. tristis+2 FAC-, making sad, saddening : voces, C.poët. ...
An Elementary Latin Dictionary