τὸ ὀξύθυμον
From LSJ
σταγόνες ὕδατος πέτρας κοιλαίνουσιν → constant dropping wears away a stone, constant dripping will wear away the hardest stone, little strokes fell big oaks, constant dripping wears the stone, constant dropping wears the stone, constant dripping will wear away a stone
Translations
irascibility
Bulgarian: раздразнителност, избухливост; Catalan: irascibilitat; French: irascibilité; Ancient Greek: ἀκραχολία, ἀκρηχολίη, ἀκροχολία, ὀξυθύμησις, ὀξυθυμία, ὀργιλότης, τὸ ὀξύθυμον, τοὐξύθυμον; Italian: irascibilità; Latin: iracundia; Spanish: irascibilidad, iracundia