ἰδρείη

From LSJ

νᾶφε καὶ μέμνασ' ἀπιστεῖν → keep a clear head and remember not to believe a thing (Epicharmus fr. 250)

Source

French (Bailly abrégé)

épq. c. ἰδρεία.

English (Autenrieth)

(ϝιδρ.): knowledge, skill. (Il.)