νέῳ δὲ σιγᾶν μᾶλλον ἢ λαλεῖν πρέπει → it's fitting for a young man to keep silence rather than to speak (Menander)
sēclūsus: a, um, Part. and P. a., from secludo.
sēclūsus,¹⁶ a, um, part. de secludo.