εὐστροφία
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
ἡ,
A suppleness, versatility, ἔν τινι Chrysipp.Stoic.3.178, cf. Porph.Abst.3.23; τὸ μετ' εὐστροφίας ὀξὺ πρὸς τὰς ἀπαντήσεις Plu. 2.510f, cf. 975a, LXX Pr.14.35.