mŏnŏsyllăbus — Lewis & Short
mŏnŏsyllăbus, a, um, adj., = monosu/llabos,
I monosyllabic (post-Aug.):
VOX,Mart. Cap. 3, § 269; 5, § 520.—As subst., a monosyllable: mŏnŏsyllabon, i, n. (sc. verbum), Aus. Idyll. Lit. Monosyll. 13:
monosyllaba, sc. verba,Quint. 9, 4, 42; Mart. Cap. 3, § 294.