trisyllabus
From LSJ
νέῳ δὲ σιγᾶν μᾶλλον ἢ λαλεῖν πρέπει → it's fitting for a young man to keep silence rather than to speak (Menander)
trĭsyllăbus: a, um, adj., = τρισύλλαβος>,
I of three syllables, trisyllabic: verbum, Varr. L. L. 9, § 91 Müll.; Mart. Cap. 5, § 522; 3, § 169.
