ἐπὶ ξυροῦ γὰρ ἀκμῆς ἔχεται ἡμῖν τὰ πρήγματα → our affairs are balanced on a razor's edge, our affairs are set upon the razor's edge
ἀβεβαίως, ἀκαταστάτως, ἀκροσφαλῶς, ὀλισθηρῶς, μετεώρως