τὸ δυσμείλικτον
From LSJ
νέῳ δὲ σιγᾶν μᾶλλον ἢ λαλεῖν πρέπει → it's fitting for a young man to keep silence rather than to speak (Menander)
Spanish
Translations
implacability
French: implacabilité; Greek: αδιαλλαξία, αναλγησία, ανυποχωρησία; Ancient Greek: τὸ δυσμείλικτον, ἀσπονδία, ἀθελγία; Irish: dobhogthacht, doshástacht; Italian: implacabilità; Manx: myskid, neuveeinid; Norwegian Bokmål: uforsonlighet; Polish: nieugiętość; Russian: непримиримость; Spanish: implacabilidad