σιγή ποτ' ἐστὶν αἱρετωτέρα λόγου → sometimes silence is preferable to words (Menander)
rĭgĭdĭtas: ātis, f. rigidus,I stiffness, hardness of wood, Vitr. 2, 9.
rĭgĭdĭtās, ātis, f., rigidité, inflexibilité [du bois]: Vitr. Arch. 2, 9, 9.
