νίζειν
From LSJ
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
Greek > English (Woodhouse Verbs Reversed)
(see also νίζω): bathe hands and feet, hands and feet, purify with lustral water