σπουδαιότερον
From LSJ
Πονηρὸν ἄνδρα μηδέποτε ποιοῦ φίλον (μηδέπω κτήσῃ φίλον) → Tibi numquam amicum facito moratum male → Nimm niemals einen schlechten Mann zum Freunde dir
neuter of σπουδαιότερος as adverb; more earnestly than others), i.e. very promptly: very diligently.