ἀδιαρρίπιστος
From LSJ
ἀλλ᾽ ἀμφὶ τοῖς σφαλεῖσι μὴ 'ξ ἑκουσίας ὀργὴ πέπειρα → to those who err in judgment, not in will, anger is gentle | men's wrath is softened toward those who have erred unwittingly
Greek (Liddell-Scott)
ἀδιαρρίπιστος: -ον, ὁ μὴ διαρριπιζόμενος διὰ τοῦ ῥιπιδίου, Ἡσύχ. ἐν λέξει ἄκραγον.